1993 PERLADANGAN SELARAS ALAM

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PERLADANGAN SELARAS ALAM SEBAGAI OPTIMALISASI

ALTERNATTF LAHAN KERING DI PULAU SAMOSIR

Pa^lhilngan Lunfunnajd'/

ABSTRACT

The objectives

of

the research was to study the suitability

oI

dryland

farming

in

Samosir

Island,

and

getting

an

alternative method

to

optimalize

the

upland

resource

utilization.

The research was carried

out from

September,

1990

to

May, 1991.

The samples

of

the

research

are the

dryland farming in Pardamean

village,

Sangkal,

Sidaji,

Situnjang,

and

Tambun

village,

the

Distric

of

Simanindo,

North

Sumatra.

All

of

those area has

the

Humic Podzols

soil

type, land forms

is plain

to

mountainous, 905 meters above sea level,

type D

-

E

climate

according

to

Oldeman,

and

precipitation'

is

l73Z

mm/year.

Crops planted

in

those area are Cassava (Mg!thg!

escuienta

C),

Eschalauch

(allium

cepa

L),

Peanut (Atacfris

@-1,),

Corn (Zea mayg

L),-""a

ffi,ci (o"iz.

sativaEl.----From

this

rciearch could be conclude

that the

upland rn

those area

in

currently

not

suitable class (N,

- r). It

is

suggested

that

the dryland resource utilization

dt

the

Samosir

lsland can be optimized through modification

of

microclimate, approval

of

the

crops

with

pre{erably reusable crop residues

and wastes, contouring or terracing practices.

i

IV. KESIMPUTAN

...,.

Dari hasil penelitian

ini

dapat disimpulkan sebagai berikut :

l-. Pola perladangan yang ada pada saat

ini

tidak sesuai (Nf-r).

2.

Alternatif

untuk engoptimalkan pola pengelolaan

lahan

kering

di daerah _{peneiitian dapat ditempuh melalui :}

a. Pola pertanaman dengan usaha modifikasi

iklim

mikro,

b. Pola pertanaman yang bersifat

limbah dapat guna

kembali

tercepat (prefer immediately crop resedue and waste

reusab-le),

c. Pola pertanaman

kontur

(contour

farming) ataupun

_usaha penterasan (terracing).