Pengaruh Intensitas Pengolahan Tanah dan cara Pemberian Air Terputus-Putus Terhadap Kebutuhan Air dan Hasil Padi di Daerah Irigasi Sei Kembang, Kabupaten Bungo Tebo, Propinsi Jambi

(1)

PEMGARUH lNTERlSlTAS PENGOLAHAN TANAH

DAlll

GAR& PENIBERlAH AIR TERPUTUS

-

PUTUS TERHADAP KEBUT UHAM

AIR

DAN HASlL PAD! DI DAERAH lRlGASl

SEI

KEMBANG,

KABUPATEN BUMGO TEBO, PROPINSI JAMB1

1986

FAKULTAS TEKNOLOGI PERTANlAN

lNSTlTUT PERTANlAN BOGOR

(2)

P i e t e r s e n S i n a m o . F 1 7 . 0 4 5 3 . P e n g a r u h i n t e n s i t a s p e n g o l a b a n t a n a h d a n c a r a p e m b e r i a n a i r t e r p u t u s - p u t u s t e r h a d a p k ~ - b u t u h a n a i r d a n h a s i l piadi d i O a e r a h I r i g a s i S e i Kembang,

k a b u p a t e n Bungo T e b o , p r o p i n s i J a m b i . O i bawah b i m b i n g a n Achmadi P a r t o w i j o t o .

RINGKASAN

T u j u a n d a r i p e n e l i t i a n i n i a d a l a h u n t u k m e n g e t a h u i p e - n g a r u h i n t e n s i t a s p e n g o l a h a n t a n a h d a n c a r a p e m b e r i a n a i r t e r p u t u s - p u t u s t e r h a d a p k e b u t u h a n a i r d a n h a s i l p a d i , d i b a n d i n g k a n d e n g a n p e r l a k u a n s e t e m p a t ( n o r m a l ) , s e r t a p e n e r a p a n y a n g d a p a t d i l a k u k a n d i l o k a s i p e n e l i t i a n , t e r u t a m a b i l a d e

-

b i t a i r y a n g t e r s e d i a u n t u k i r i g a s i k u r a n g .

I n t e n s i t a s p e n g o l a h a n t a n a h y a n g d i t e r a p k a n a d a l a h d e - n g a n c a n g k u l d u a k a l i d a n c a n g k u l t i g a k a l i , C a r a p e m b e r i - a n

a i r

y a n g d i t e r a p k a n a d a l a h c a r a t e r p u t u s - p u t u s d i a i r i

-

t i d a k d i a i r i , b e r g a n t i a n s e l a m a p e r t u m b u h a n t a n a m a n , s e l a m a

5 h a r i , 7 h a r i , d a n 1 0 h a r i . P e r l a k u a n s e t e m p a t ( n o r m a l )

-

a d a l a h p e n g o l a h a n t a n a h d e n g a n d u a k a l i c a n g k u l , s e r t a p e m b e r i a n a i r s e c a r a p e n g g e n a n g a n t e r u s r n e n e r u s .

J u r n l a h k e b u t u h a n a i r m u l a i p e r i o d e p e n g o l a h a n t a n a h s a m p a i p e r i o d e p e m a s a k a n p a d a p e r l a k u a n n o r m a l a d a l a h 9 6 7 . 5 0 m m , t e r k e c i l a d a l a h 9 2 0 . 4 6 rnm ( 9 5 . 1 4 % n o r m a l ) p a d a p e r l a k u

-

a n p e n g o l a h a n t a n a h t i g a k a l i c a n g k u l , d a n p e m b e r i a n a i r t e r p u t u s - p u t u s 1 0 h a r i d i a i r i

-

1 0 h a r i t i d a k .

(3)

p ~ r l a k u a n n o r m a l a d a l a h 6 . 6 4 t o n / l i a , s e d a n g k a n h a s i l t e r k e - c i l a d a l a h p a d a p e r l a k u a n p e n g o l a h a n t a n a h d u a k a l i c a n g k u l d a n c a r a p e m b e r i a n a i r t e r p u t u s - p u t u s 1 0 h a r i d i a i r i - 1 0 ha

-

r i t i d a k ( 5 . 9 2 t o n / l i a , 8 9 % n o r m a l ) . I - i a s i l p a d i t e r b e s a r t e r d a p a t p 8 d a p e r l a k u a n p e n g o l a h a n t a n a h c a n q k u l t i g a k a l i , d a n c a r a p e m b e r i a n a i r t e r p u t u s - p u t u s 5 h a r i d i a i r i - 5 h a r i t i d a k ( 8 . 9 2 t o n / H a , 1 3 4 . 3 4 % n o r m a l ) .

P e m b e r i a n a i r s e c a r a t e r p u t u s - p u t u s 5 h a r i d i a i r i

-

5 h a r i t i d a k , a t a u 7 h a r i d i a i r i

-

7 h a r i t i d a k , d ; ? p a t m e n i n q k a t k a n h a s i l p a d i d i b a n d i n q l c a n d e n q a n c a r a ' p e n g g a n a n q a n t e -

r u s m e n e r u s . D e n g a n m e n i n g k a t k a n i n t e n s i t a s p e n g o l a h a n t a - n a h d a r i d u a k a l i c a n g k u l m e n j a d i t i g a k a l i c a n g k u l , d i s e r - t a i p e m b e r i a n a i r s e c a r a

terputus-putus,(diairi-tidak

d i a -

i r i )

s e l a m a 5 a t a u 7 a t a u 1 0 h a r i m e m b e r i k a n h a s i l y a n g l e - b i h b e s a r m a s i n g - m a s i n g 1 3 4 . 3 4 $ n o r m a l , 1 2 5 . 6 0 % n o r m a l , d a n 1 1 9 . 4 3 $ n o r m a l .

D a l a m e k s p l o a t a s i p e m b a g i a n a i r i r i q a s i , t e r u t a m a b i l a d e b i t a i r t e r s e d i a k u r a n q , d a p a t d i l a k u k a n p e m b e r i a n a i r

se

c a r a t e r p u t u s - p u t u s ( m e n u r u t p r i o r i t a s ) s e b a g a i b e r i k u t : A . B i l a p e n q o l a h a n t a n a h d e n g a n d u a k a l i c a n g k u l :

-

5 h a r i d i a i r i

-

5 h a r i t i d a k

-

7 h a r i t i d a k

8 . O i l a p e n g o l a h a n t a n a h i n t e n s i f d e n g a n t i g a k a l i c a n g k u l :

-

5 h a r i t i d a k

-

7 h n r i d i a i r i

-

7 h n r i t i d a l <

(4)

PENGARUH I N T E N S I T A S PENGOLAHAN TRNAH

D A N CARA P E N B E R I A N A I R TERPUTUS-PUTUS TERHADAP K E B U T U H A N A I R

D A N H A S I L P A D 1 D I D A E R A H I R I G A S I S E I KENBANG,

K A B U P A T E N DUNG0 T E E D , P R O P I N S I J A M B 1

O l e h

P I E T E R S E N S I N A M D

F 1 7 . 0 4 5 3

S K R I P S I

S e b a g a i s a l a h s a t u s y a r a t u n t u k m e m p e r o l e h g e l a r

-

SARJANA T E K N O L O G I P E R T A N I A N

p a d a J u r u s a n M E K A N I S A S I P E R T A N I A N ,

F a k u l t a s T e k n o l o g i P e r t a n i a n

I n s t i t u t P e r t a n i a n B o g o r

1 9 8 6

F A K U L T A S T E K N O L O G I P E R T A N I A N

I N S T I T U T P E R T A N I A N BOGOR

(5)

PENGARUH I N T E N S I T A S P E N G O L A H A N TANAH

D A N CARA P E M B E R I A N A I R TERPUTUS-PUTUS TERHADAP K E B U T U H A N A I R

D A N H A S I L P A D I . D I D A E R A H I R I G A S I S E I KEMBANG,

K A B U P A T E N BUNG0 TEBO, P R O P I N S I J A M B 1

S e b a y a i s a l z h s a t u s y a r a t u n t u k n l e m p e r o l e h y e l s r

p a d a J u r u s a n M E K A N I S A S I P E R T n N I A N ,

F z k u l t z s T e k n o l o g i P e r t a n i a n ,

I n s t i t u t P e r t a n i a n G o g o r

(6)

KATA PENGANTAR

P u j i Tuhan, k a r e n a k a s i h N y a p e n u l i s d a p a t m e n y e l e s a i k a n

s k r i p s i i n i .

P e n u l i s mengucapkan t e r i r n a k a s i h kepada:

1. I r . Achmadi P a r t o w i j o t o s e b a g a i d o s e n pembimbing,

2. R u s l i Anwar, BIE, p i m p i n a n p r o y e k E & P P e n g a i r a n Jarnbi

y a n g b e r k e n a n m e n y e d i a k a n t e m p a t d a n f a s i l i t a s s e l a m a pe-

>

n e l i t i a n .

3. I b u d a n k e l u a r g a y a n g s e l a l u mendoakanku.

4. Ir. S u t a r y a , I r . N.Yanuar, Ir. Sukarsono, I r . S u y a t n o ,

d a n Ir. Y u n i A s t u t i y a n g b a n y a k memberikan b a n t u a n r n o r i l

s e l a m a p e n e l i t i a n i n i .

5. Rekan r e k a n yang b a n y a k m e m b e r i k a n d o r o n g a n k e r j a .

A k h i r n y a k r i t i k d a n s a r a n y a n g membangun p e n u l i s h a r a p -

k a n u n t u k p e r b a i k a n t u l i s a n s e l a n j u t n y a .

B o g o r , J u n i 1 9 8 6 P e n u l i s

(7)

l i a l a n i a n

...

K n T A P C N G A N T A R

i i i

...

D A F T A R T A B E L v

...

D A F T A R GAlI;BAN v i i

...

D A F T A R L A M P I R A N v i i i

...

.

I P E N D A H U L U A N 1

I 1

.

T I I V J A U A N P U S T A K A

...

3

....

A

.

CnRA P E F I S E R I A N DAN K E B U T U H d t J A I R I R I G A S I ₃

...

a

.

P E N G O L R I H R N T.A M r \ i i 1 6

...

C

.

PERTUPIBUHAN TAN;.?. AN P A D 1 2 1

...

I11

.

PELA!<SGP?AAN P E N E L I T I A N 2 4

A

.

L O I < A S I DAN W::KTU P E N E L I T I A N

...

2 4

8

.

I < E A D i \ A N Ul"iUK DRERAH

...

2 4

C

.

rg. E T D D A P E P J E L I T I A N

...

30

...

.

D E A H A N D A N P E R A L A T A N P E N E L I T I A N 3 2

...

E

.

K E G I A T A N P E N E L I T I A N 3 2

I V

.

H R S I L DAN P E F . B A i i A S A N

...

4 1

...

.

A T G T A A I R 4 1

8

.

A G R O N Q A I TANAGSi'i P O D 1

...

5 3

...

V

.

K E S I i l 6 P U L A N .:)AN SRRRN

..,,.

6 1

...

....

KESIFsPLiLAP\! 6 1

8

.

_{S ~ R A N}

...

62

...

i)."FTi!E PIIST:, !<A 6 4

(8)

L a j u p e r k o 1 ; : s i p a d a b e r b a g n i t e k s t u r

t a n a h

...

1 2 P c n u r u n a n 1 > j u p e r k o l a s i s e s u ? i w a k t u

s e t e l a h p e m b u l t a a n t ~ n a h s a w a h

...

1 3 P e r s e n t a s e j a m p e n y i n a r a n m a t a h s r i

b u l a n a n d a l a m s e t a h u n

...

1 5 R a t a - r a t a e v a p o t r a n s p i r a s i d s n p e r k o -

l a s i (ET+P, r n r c / h a r i ) u n t u k t i a p p e r - l a k u a n p a d a p e r t u m b u h a n v e g e t e t i f ,

p r o d u k t i f , d a n p e m a s a k a n

...

42

R a t a - r a t a p e r k o l a s i ( P , r n m / h a r i ) t i a p p e r l - k u a n p a d ? p e r i o d e p e r t u m b u h a n v e -

g e t a t i f , r e p r o d u k t i f , d s n p e m a s a k a n . .

...

4 3

R a t a - r a t a k e d a l a m a n muka a i r t a n a h ( c m ) p a d a p e r i o d e p e r t u m b u h a n v e g e t a t i f , ,

.

r e p r o d u k t i f , d a n p e m a s a k n n

...

4 5

R a t a - r a t a e v a p o t r a n s p i r a s i ( E T , m m / h a r i ) u n t u k t i a p p e r l a k u a n p a d a p e r i o d e p e r - t u m b u h a n v e g e t a t i f , r e p r o d u k t i f , d a n

p e m a s a k a n

...

4 6

J u m l a h h n r i t e r j a d i n y a p e r k o l a s i , r a - t a - r a t s p e r k o l a s i p e r p e r i o d e ( m m / h a r i ) d a n j u m l a h k e b u t u h a n i i r p e r k o l a s i

( m m )

...

5 1

J u m l a h k e b u t u h a n z i r u n t u k e v a p o t r a n s p i - r a s i ( m m ) s e t i a p p e r l a k u a 3 p a d a p e r i o d e p e r t u m b u h a n v e g e t e t i f , r e p r o d u k t i f , d a n

...

p e m a s a k a n 5 2

J u r n l z h l k e b u t u h ~ n z i r t i a p p e r l a k u o n , rnu- l a i p e r i o d e p e n g o l a h a n t a n a h s a m p a i pe--

r i o d e pemasak::n

...

5 3

i j a t a - r a t a t i n g g i t 7 n s m a n ( c m ) p a d z u m u r

...

2 s a n ~ p a i 1 0 r n i n g i j u s e t e l ; ? h tnn;:m 5 4

R,?tc,-rat;. j:jii:lah c?n-kar) t i a p r u m p u n ( b a - t;:ng) p:?d.-, u n i u r 2 s;:rnpni 1 0 m i n g g u s e t e -

...

(9)

Tnbcil 1 3 . : \ . - 1 ~ : - - r ; i t i ! > . L h : : s i l p ; . d i ( t o n / i - i n ) d w r i u b i -

...

sm

x 5in t i ? p p e r l ; i k i ~ - n

5fi

T a b e l 1 4 . J u r n l , ? h k e b u t u h z : n a i r , h a s i l p a d i s e t i a p h e k t a r , d a n k e b u t u h a n a i r u n t u k m e n q h a - s i l k a n s a t u k i l o g r a m g a b a h k e r i n q g i -

l i n g

...

5 7 T i i b e l 1 5 . J u i n l a h r i n z k a n p r o d u k t i i p e r ruiripun, jum-

1 - h q z b a h i s i p e r r n a l n i , b e r a t 1 000 _{b u -}

6 .

~ l r g z b ; ~ h i s i d s n p o t e n s i h s s i l p x d i

(10)

DAFTAR GAMBAR

H a l a m a n G a n ~ b a r 1. H a g a n e v a p o r a s i

(E),

t r a n s p i r a s i ( T ) ,

...

d a n p e r k o l b s i ( P )

9

Gambztr 2. S e k a t u k u r t i p e " T h o m p s o n " d e n g a n

...

[image:10.530.48.467.117.328.2]

s k a l a p e n g u k u r t i n g g i a i r 16:

Gambar 3. B a g a n p e n e m p a t a n l i s i m e t e r ( E T + P )

,

...

P , d a n l i s i m e t e r E 3 6

Ganibar 4. B a g a n p e n e m p ~ ~ t a n p i e z o m e t e r u n t u k

...

p e n g u k u r a n rnuka a i r t a n a h 3 6

Gambar 5. k l i s t o g r a m p e r s e n t a s e k e b u t u h a n a i r , h a s i l p a d i , d a n p o t e n s i h a s i l d s r i m a s i n g - m a s i n q p e r l a k u a n t e r h a d a p

(11)

(12)

(13)

(14)

(15)

(16)

(17)

(18)

(19)

(20)

(21)

(22)

(23)

(24)

(25)

(26)

(27)

(28)

(29)

(30)

(31)

(32)

(33)

(34)

(35)

(36)

(37)

(38)

(39)

(40)

(41)

(42)

(43)

(44)

(45)

(46)

(47)

(48)

(49)

(50)

(51)

(52)

(53)

(54)

(55)

(56)

(57)

(58)

(59)

(60)

(61)

(62)

(63)

(64)

(65)

(66)

(67)

(68)

(69)

(70)

(71)

(72)

(73)

(74)

(75)

(76)

(77)

(78)

(79)

(80)

(81)

(82)

(83)

(84)

(85)

(86)

(87)

(88)

(89)

(90)

(91)

(92)

(93)

(94)

(95)

(96)

(97)

(98)

(99)

(100)

(101)

(102)

(103)

(104)

(105)

(106)

(107)

(108)

(109)

(110)

(111)

(112)

(113)

(114)

(115)

(116)

(117)

(118)

PEMGARUH lNTERlSlTAS PENGOLAHAN TANAH

DAlll

GAR& PENIBERlAH AIR TERPUTUS

-

PUTUS TERHADAP KEBUT UHAM

AIR

DAN HASlL PAD! DI DAERAH lRlGASl

SEI

KEMBANG,

KABUPATEN BUMGO TEBO, PROPINSI JAMB1

1986

FAKULTAS TEKNOLOGI PERTANlAN

lNSTlTUT PERTANlAN BOGOR

(119)

P i e t e r s e n S i n a m o . F 1 7 . 0 4 5 3 . P e n g a r u h i n t e n s i t a s p e n g o l a b a n t a n a h d a n c a r a p e m b e r i a n a i r t e r p u t u s - p u t u s t e r h a d a p k ~ - b u t u h a n a i r d a n h a s i l piadi d i O a e r a h I r i g a s i S e i Kembang,

k a b u p a t e n Bungo T e b o , p r o p i n s i J a m b i . O i bawah b i m b i n g a n Achmadi P a r t o w i j o t o .

RINGKASAN

T u j u a n d a r i p e n e l i t i a n i n i a d a l a h u n t u k m e n g e t a h u i p e - n g a r u h i n t e n s i t a s p e n g o l a h a n t a n a h d a n c a r a p e m b e r i a n a i r t e r p u t u s - p u t u s t e r h a d a p k e b u t u h a n a i r d a n h a s i l p a d i , d i b a n d i n g k a n d e n g a n p e r l a k u a n s e t e m p a t ( n o r m a l ) , s e r t a p e n e r a p a n y a n g d a p a t d i l a k u k a n d i l o k a s i p e n e l i t i a n , t e r u t a m a b i l a d e

-

b i t a i r y a n g t e r s e d i a u n t u k i r i g a s i k u r a n g .

I n t e n s i t a s p e n g o l a h a n t a n a h y a n g d i t e r a p k a n a d a l a h d e - n g a n c a n g k u l d u a k a l i d a n c a n g k u l t i g a k a l i , C a r a p e m b e r i - a n

a i r

y a n g d i t e r a p k a n a d a l a h c a r a t e r p u t u s - p u t u s d i a i r i

-

t i d a k d i a i r i , b e r g a n t i a n s e l a m a p e r t u m b u h a n t a n a m a n , s e l a m a

5 h a r i , 7 h a r i , d a n 1 0 h a r i . P e r l a k u a n s e t e m p a t ( n o r m a l )

-

a d a l a h p e n g o l a h a n t a n a h d e n g a n d u a k a l i c a n g k u l , s e r t a p e m b e r i a n a i r s e c a r a p e n g g e n a n g a n t e r u s r n e n e r u s .

J u r n l a h k e b u t u h a n a i r m u l a i p e r i o d e p e n g o l a h a n t a n a h s a m p a i p e r i o d e p e m a s a k a n p a d a p e r l a k u a n n o r m a l a d a l a h 9 6 7 . 5 0 m m , t e r k e c i l a d a l a h 9 2 0 . 4 6 rnm ( 9 5 . 1 4 % n o r m a l ) p a d a p e r l a k u

-

a n p e n g o l a h a n t a n a h t i g a k a l i c a n g k u l , d a n p e m b e r i a n a i r t e r p u t u s - p u t u s 1 0 h a r i d i a i r i

-

1 0 h a r i t i d a k .

(120)

p ~ r l a k u a n n o r m a l a d a l a h 6 . 6 4 t o n / l i a , s e d a n g k a n h a s i l t e r k e - c i l a d a l a h p a d a p e r l a k u a n p e n g o l a h a n t a n a h d u a k a l i c a n g k u l d a n c a r a p e m b e r i a n a i r t e r p u t u s - p u t u s 1 0 h a r i d i a i r i - 1 0 ha

-

r i t i d a k ( 5 . 9 2 t o n / l i a , 8 9 % n o r m a l ) . I - i a s i l p a d i t e r b e s a r t e r d a p a t p 8 d a p e r l a k u a n p e n g o l a h a n t a n a h c a n q k u l t i g a k a l i , d a n c a r a p e m b e r i a n a i r t e r p u t u s - p u t u s 5 h a r i d i a i r i - 5 h a r i t i d a k ( 8 . 9 2 t o n / H a , 1 3 4 . 3 4 % n o r m a l ) .

P e m b e r i a n a i r s e c a r a t e r p u t u s - p u t u s 5 h a r i d i a i r i

-

5 h a r i t i d a k , a t a u 7 h a r i d i a i r i

-

7 h a r i t i d a k , d ; ? p a t m e n i n q k a t k a n h a s i l p a d i d i b a n d i n q l c a n d e n q a n c a r a ' p e n g g a n a n q a n t e -

r u s m e n e r u s . D e n g a n m e n i n g k a t k a n i n t e n s i t a s p e n g o l a h a n t a - n a h d a r i d u a k a l i c a n g k u l m e n j a d i t i g a k a l i c a n g k u l , d i s e r - t a i p e m b e r i a n a i r s e c a r a

terputus-putus,(diairi-tidak

d i a -

i r i )

s e l a m a 5 a t a u 7 a t a u 1 0 h a r i m e m b e r i k a n h a s i l y a n g l e - b i h b e s a r m a s i n g - m a s i n g 1 3 4 . 3 4 $ n o r m a l , 1 2 5 . 6 0 % n o r m a l , d a n 1 1 9 . 4 3 $ n o r m a l .

D a l a m e k s p l o a t a s i p e m b a g i a n a i r i r i q a s i , t e r u t a m a b i l a d e b i t a i r t e r s e d i a k u r a n q , d a p a t d i l a k u k a n p e m b e r i a n a i r

se

c a r a t e r p u t u s - p u t u s ( m e n u r u t p r i o r i t a s ) s e b a g a i b e r i k u t : A . B i l a p e n q o l a h a n t a n a h d e n g a n d u a k a l i c a n g k u l :

-

5 h a r i t i d a k

-

7 h a r i t i d a k

8 . O i l a p e n g o l a h a n t a n a h i n t e n s i f d e n g a n t i g a k a l i c a n g k u l :

-

5 h a r i t i d a k

-

7 h n r i d i a i r i

-

7 h n r i t i d a l <

(121)

PENGARUH I N T E N S I T A S PENGOLAHAN TRNAH

D A N CARA P E N B E R I A N A I R TERPUTUS-PUTUS TERHADAP K E B U T U H A N A I R

D A N H A S I L P A D 1 D I D A E R A H I R I G A S I S E I KENBANG,

K A B U P A T E N DUNG0 T E E D , P R O P I N S I J A M B 1

O l e h

P I E T E R S E N S I N A M D

F 1 7 . 0 4 5 3

S K R I P S I

S e b a g a i s a l a h s a t u s y a r a t u n t u k m e m p e r o l e h g e l a r

-

p a d a J u r u s a n M E K A N I S A S I P E R T A N I A N ,

F a k u l t a s T e k n o l o g i P e r t a n i a n

I n s t i t u t P e r t a n i a n B o g o r

1 9 8 6

F A K U L T A S T E K N O L O G I P E R T A N I A N

I N S T I T U T P E R T A N I A N BOGOR

(122)

PENGARUH I N T E N S I T A S P E N G O L A H A N TANAH

D A N CARA P E M B E R I A N A I R TERPUTUS-PUTUS TERHADAP K E B U T U H A N A I R

D A N H A S I L P A D I . D I D A E R A H I R I G A S I S E I KEMBANG,

K A B U P A T E N BUNG0 TEBO, P R O P I N S I J A M B 1

S e b a y a i s a l z h s a t u s y a r a t u n t u k n l e m p e r o l e h y e l s r

p a d a J u r u s a n M E K A N I S A S I P E R T n N I A N ,

F z k u l t z s T e k n o l o g i P e r t a n i a n ,

I n s t i t u t P e r t a n i a n G o g o r

(123)

KATA PENGANTAR

P u j i Tuhan, k a r e n a k a s i h N y a p e n u l i s d a p a t m e n y e l e s a i k a n

s k r i p s i i n i .

P e n u l i s mengucapkan t e r i r n a k a s i h kepada:

1. I r . Achmadi P a r t o w i j o t o s e b a g a i d o s e n pembimbing,

2. R u s l i Anwar, BIE, p i m p i n a n p r o y e k E & P P e n g a i r a n Jarnbi

y a n g b e r k e n a n m e n y e d i a k a n t e m p a t d a n f a s i l i t a s s e l a m a pe-

>

n e l i t i a n .

3. I b u d a n k e l u a r g a y a n g s e l a l u mendoakanku.

4. Ir. S u t a r y a , I r . N.Yanuar, Ir. Sukarsono, I r . S u y a t n o ,

d a n Ir. Y u n i A s t u t i y a n g b a n y a k memberikan b a n t u a n r n o r i l

s e l a m a p e n e l i t i a n i n i .

5. Rekan r e k a n yang b a n y a k m e m b e r i k a n d o r o n g a n k e r j a .

A k h i r n y a k r i t i k d a n s a r a n y a n g membangun p e n u l i s h a r a p -

k a n u n t u k p e r b a i k a n t u l i s a n s e l a n j u t n y a .

B o g o r , J u n i 1 9 8 6 P e n u l i s

(124)

l i a l a n i a n

...

K n T A P C N G A N T A R

i i i

...

D A F T A R T A B E L v

...

D A F T A R GAlI;BAN v i i

...

D A F T A R L A M P I R A N v i i i

...

.

I P E N D A H U L U A N 1

I 1

.

T I I V J A U A N P U S T A K A

...

3

....

A

.

CnRA P E F I S E R I A N DAN K E B U T U H d t J A I R I R I G A S I ₃

...

a

.

P E N G O L R I H R N T.A M r \ i i 1 6

...

C

.

PERTUPIBUHAN TAN;.?. AN P A D 1 2 1

...

I11

.

PELA!<SGP?AAN P E N E L I T I A N 2 4

A

.

L O I < A S I DAN W::KTU P E N E L I T I A N

...

2 4

8

.

I < E A D i \ A N Ul"iUK DRERAH

...

2 4

C

.

rg. E T D D A P E P J E L I T I A N

...

30

...

.

D E A H A N D A N P E R A L A T A N P E N E L I T I A N 3 2

...

E

.

K E G I A T A N P E N E L I T I A N 3 2

I V

.

H R S I L DAN P E F . B A i i A S A N

...

4 1

...

.

A T G T A A I R 4 1

8

.

A G R O N Q A I TANAGSi'i P O D 1

...

5 3

...

V

.

K E S I i l 6 P U L A N .:)AN SRRRN

..,,.

6 1

...

....

KESIFsPLiLAP\! 6 1

8

.

_{S ~ R A N}

...

62

...

i)."FTi!E PIIST:, !<A 6 4

(125)

L a j u p e r k o 1 ; : s i p a d a b e r b a g n i t e k s t u r

t a n a h

...

1 2 P c n u r u n a n 1 > j u p e r k o l a s i s e s u ? i w a k t u

s e t e l a h p e m b u l t a a n t ~ n a h s a w a h

...

1 3 P e r s e n t a s e j a m p e n y i n a r a n m a t a h s r i

b u l a n a n d a l a m s e t a h u n

...

1 5 R a t a - r a t a e v a p o t r a n s p i r a s i d s n p e r k o -

l a s i (ET+P, r n r c / h a r i ) u n t u k t i a p p e r - l a k u a n p a d a p e r t u m b u h a n v e g e t e t i f ,

p r o d u k t i f , d a n p e m a s a k a n

...

42

R a t a - r a t a p e r k o l a s i ( P , r n m / h a r i ) t i a p p e r l - k u a n p a d ? p e r i o d e p e r t u m b u h a n v e -

g e t a t i f , r e p r o d u k t i f , d s n p e m a s a k a n . .

...

4 3

R a t a - r a t a k e d a l a m a n muka a i r t a n a h ( c m ) p a d a p e r i o d e p e r t u m b u h a n v e g e t a t i f , ,

.

r e p r o d u k t i f , d a n p e m a s a k n n

...

4 5

R a t a - r a t a e v a p o t r a n s p i r a s i ( E T , m m / h a r i ) u n t u k t i a p p e r l a k u a n p a d a p e r i o d e p e r - t u m b u h a n v e g e t a t i f , r e p r o d u k t i f , d a n

p e m a s a k a n

...

4 6

J u m l a h h n r i t e r j a d i n y a p e r k o l a s i , r a - t a - r a t s p e r k o l a s i p e r p e r i o d e ( m m / h a r i ) d a n j u m l a h k e b u t u h a n i i r p e r k o l a s i

( m m )

...

5 1

J u m l a h k e b u t u h a n z i r u n t u k e v a p o t r a n s p i - r a s i ( m m ) s e t i a p p e r l a k u a 3 p a d a p e r i o d e p e r t u m b u h a n v e g e t e t i f , r e p r o d u k t i f , d a n

...

p e m a s a k a n 5 2

J u r n l z h l k e b u t u h ~ n z i r t i a p p e r l a k u o n , rnu- l a i p e r i o d e p e n g o l a h a n t a n a h s a m p a i pe--

r i o d e pemasak::n

...

5 3

i j a t a - r a t a t i n g g i t 7 n s m a n ( c m ) p a d z u m u r

...

2 s a n ~ p a i 1 0 r n i n g i j u s e t e l ; ? h tnn;:m 5 4

R,?tc,-rat;. j:jii:lah c?n-kar) t i a p r u m p u n ( b a - t;:ng) p:?d.-, u n i u r 2 s;:rnpni 1 0 m i n g g u s e t e -

...

(126)

Tnbcil 1 3 . : \ . - 1 ~ : - - r ; i t i ! > . L h : : s i l p ; . d i ( t o n / i - i n ) d w r i u b i -

...

sm

x 5in t i ? p p e r l ; i k i ~ - n

5fi

T a b e l 1 4 . J u r n l , ? h k e b u t u h z : n a i r , h a s i l p a d i s e t i a p h e k t a r , d a n k e b u t u h a n a i r u n t u k m e n q h a - s i l k a n s a t u k i l o g r a m g a b a h k e r i n q g i -

l i n g

...

5 7 T i i b e l 1 5 . J u i n l a h r i n z k a n p r o d u k t i i p e r ruiripun, jum-

1 - h q z b a h i s i p e r r n a l n i , b e r a t 1 000 _{b u -}

6 .

~ l r g z b ; ~ h i s i d s n p o t e n s i h s s i l p x d i

(127)

DAFTAR GAMBAR

H a l a m a n G a n ~ b a r 1. H a g a n e v a p o r a s i

(E),

t r a n s p i r a s i ( T ) ,

...

d a n p e r k o l b s i ( P )

9

Gambztr 2. S e k a t u k u r t i p e " T h o m p s o n " d e n g a n

...

[image:127.530.48.467.117.328.2]

s k a l a p e n g u k u r t i n g g i a i r 16:

Gambar 3. B a g a n p e n e m p a t a n l i s i m e t e r ( E T + P )

,

...

P , d a n l i s i m e t e r E 3 6

Ganibar 4. B a g a n p e n e m p ~ ~ t a n p i e z o m e t e r u n t u k

...

p e n g u k u r a n rnuka a i r t a n a h 3 6

Gambar 5. k l i s t o g r a m p e r s e n t a s e k e b u t u h a n a i r , h a s i l p a d i , d a n p o t e n s i h a s i l d s r i m a s i n g - m a s i n q p e r l a k u a n t e r h a d a p