KHOA HOC
NGHIEN e t r u TICH HOF CAC CONG NGHE TlTOfl ritr KIEM NirOC C H O 300 H A R A U A N T O A N T A P TRU>.'G,
XA A N H A I , H U Y E N N I N H PHU^OC, TINH NINH THUAN Le Xuan Quang Vien Nir&c, Tie&i tieu vd Moi tru&ng
Tom tat: Bdi bdo giai thieu kit qua nghien cieu lich hgp cdc edng nghe ldng lgc, cdp nu&e, trir nu&c vd tu&i tiit kiem nu&c cho 300 ha rau an todn tap trung xa An Hdi. huyen Ninh Phu&e, tinh Ninh Thugn. Cdc cdng nghi mai duae iing dung ti-ong du dn gdm lay nu&e tie^ sdng Lu qua cdng nghe xu ly ldng loc din cdng nghi trir nu&c cua bi ldng, chua 10.000 m , din 15 hi trung gian 500 m^/bi. tram bom cdp I cdp cho 15 bi chiea trung gian vd 15 tram bom cdp 2 cdp nu&c tuai mat mdng, cdng nghe tudi phun mua vd nhd giot cho timg logi cdy trdng trong khu vue du dn.
Cdc cdng nghe dugc tich hap tie cdc nude trin the gi&i nhu Israel, Uc, Y,vv... vai cdc cdng nghi, thiit bi cita cdc nu&c trong khu vuc vd trong nu&c de gidm gid thdnh thdp hon 30% so v&i sdn phdm ciing logi eua edc nu&c tien tien; phu hgp v&i dieu kiin kinh te, xd hdi cua ngu&i ddn dia phucmg la rdt cdn thiil di nhdn rpng tren todn vung, ddy Id du dn KHCN ndng nghiep thdng minh dugc Bd Ndng nghiep vd Phdt trien ndng thdn ddu tu trong diem.
Til' khoa: Tieh hap cdng nghi, thiet bi tudi tiet hem nu&c, tu&i eho rau an todn tap trung Summary: The paper summarizes the research results of integrating technologies of water filtering, supplying, storing and saving irrigation for 300 ha safe and intense vegetable production in An Hai commune, Ninh Phuoc district, Ninh Thuan province. The new technologies applied include water intaking from Lu river with filtering process, water storing of sedimenling tanks ranging from capacities of 10,000 m3 lo 15 tanks (per lank 500 m ) , level-1 pump supplying water for 15 intermediate tank and 15 level-2 pumps supplying water for farm, water sprinklering and dripping for kinds of crops in the command area. The techs are originated from Isarel, Australia. Italia, etc., integrated with the ones from neighboring countries and Vietnam to reduce the production cost by 30% compared to the ones from developed countries, and suitable with socio-economic of local conditions, is highly necessary to duplicate the region wide. This is research project of smart agriculture, which was prioritized by Ministry of Agriculture and Rural Development
Keywords: Integrating technologies, water-saving irrigation devices, regimes, techniques for watering safe vegetables.
1. G l 6 l THIEU Phudc, Imh Nmh thuan. Do nSm d cudi khu Kbu vuc du an ed dien tieb 300 ha d cban ddi ^"<^ ^^"^ ^^^,^ ^^"^ ^^^ * ^ " g ^^^^ 1*?? ^ h a cat Nam Cuong thuoc 3 thdn T u k Tii, Nam Trmh - Lam Cam), la vimg cat cao ngn rat khd Cudng va Hda Thanb, xa An Hai, huyen Nmh ^b^^ ^^ " g ^ « ^ ""'^'=' ^"^ ^^^^ ™« "^^^ ^^
han. Tinb den cuoi nam 2016 da c6 160 ha dugc nguoi dan tu khoan gieng va lip thilt bi Ngay nhan bai: 20/01/2020 t j j ^ pl,un njuj, cho cac loai cay tr5ng (Mang Ngay thong qua phan b,?n^ 17/02/2020 0 ^^ j j , ^ ,.
Ngay duyet dang: 20/02/2020 J\ ' j , a.
54 TAP CHf KHOA HOC VA CONG NGH^ T H O Y L O I SO 5S - 2020
KHOA HOC ^ » ? » ] p g r m T ^ Rdt, cu cai trdng (40 ha); Ca ehua, dt, tdi (10
ha) va mdt sd loai rau mau khac (30ha)). Khao sat chat lupng nude 12 gilng cd tdi 8 gidng nhigm man; cae gigng ngkm boat dpng khoang 2 nam la nhigm man, phai khoan gieng khae.
Dat dai trong khu vue thudc loai dat eat pba, tinh tbam hiit ldn. Lugng bde hoi bang nam cao (khoang 1700-^1800 mm); lupng mua tbap, tmng binh nam 750 mm, tap trung chu ygu vao 3 thang tir thang 9 den tbang 11. Nhiet dp trung bmh 27,7V, cao nhit la 35,0-39,0''C. Ngay khu vue cd sdng Lu, dien tich luu vuc F=326 km^, luu Iugng trung bmh hang nam 1,45 m^/s.
Tuy khd khan vg ngudn nude nbung chat lugng cac loai rau trdng trong khu vuc du an cho chit lupng rat ngon, dae biet la cay mang tay, nang suat khoang 12-^15 tan/nam; doanh thu khoang 600-^750 trieu/nam, lgi nhuan cho ngudi trdng mang lay khoang 350^520 trieu/nam. Khd khan ve ngudn nude tudi trong kbu vuc du an nhung khdng lam giam su phat trign dien tich trdng cay mang tay; tir 30 ha nam 2016, 50 ha nam 2017 Ign khoang 100 ha nam 2019. Vimg du an cd 51,7% dan tde Cham, 13,7% sd nguoi ngheo; kho khan ngudn nude tudi, tuy nhidn.
Lpi nhuan trdng mang tay mang lai rat cao, vi vay du an dat ra xay dung be tbdng cap nude tudi ben viing cbo 300 ba rau an toan tap trung xa An Hai, huyen Ninh Phudc, tinh Ninh Thuan la rat can thidt.
Ngudn nude duge lay tir sdng Lu (ddng chay nam kha ddi dao), Nhiem vu ehinh trong du an gdm: xac dinh chg do tudi cho cae loai cay trdng; ngudn nude tudi; cdng nghe lang, lpc dam bao cap nude cbo rau an loan; cdng ngbe trii nude, cdng nghe cap nude; cdng nghe tudi tiet kiem nude cho cac loai cay trdng. Cac hang muc dau tu ehinh gdm nang cap dap dang Tuan Tii; xay mdi cdng lay nude vao he thdng lang, Ipc; bd lang 10.000 m^; tram bom cap 1;
15 bd trung gian mdi bd 500 m"^; 15 tram bom cap 2; be thdng ducng dng tir tram bom cap 1 dgn 15 be trung gian; he thdng tudi mat rudng,w...
Bdn dd du Hch T i N H N I N H T H O A M
N I N M T H U A N P r o v i . i o e t o u r i s t mat*
TINH BINK TKU^N
Vj tr( dy dn trong tinh Ninh Thu^n Hinh 1; Vi tri khu dudn tren bdn dd Ninh Thudn
2. KET QUA 2.1. Vi tri khu dy an
Khu du an cd dien lich 300 ha thudc thdn Tuan Tii, Nam Cuong, Hda Thanh, xa An Hai, huyen Ninh Phudc, tinh Ninh Tbuan; tga do dia ly: 20.030 VT do B&c, 106.20 Kmh dp Ddng. Phia BSc giap cac phudng Dao Long, Tin Tai va My Ddng, thanh pbd Phan Rang - Thap Cham. Phia Tay BSc giap xa Phudc Tbuan; Phia Tay giap tbi trin Pbude Dan va xa Phudc Hai, huyen Ninh Pbude. Phia Ddng Bac giap phudng Ddng Hai, thanb phd Pban Rang - Thap Cham. Phia Ddng giap Bien Ddng. Pbia Nam giap xa Phudc Dinh, huyen Thuan Nam.
2.2. Xac dinh nhu cSu tudi ciia c^y tr^ng trong viing du an
Trong kbu vue du an bien cd eo ciu cay trdng khoang 100 ha mang lay, 200 ba cdn lai trdng cac loai cay ca rdt, cii cai, hanb la, lae, ea ehua, dt (bang 1); co cdu miia vu tuong lai la 250 ha mang tay va 50 ha trdng eae loai cay khac.
Dit trong khu vuc la Ioai dat cat, cd dung trpng 1,42 Tin/m^ ly trgng 1,63 tin/m^ dp xdp 46,02%; do im tdi da ddng rudng la 27,6%V.
TAP CHi KHOA HOC VA C O N G N G H ^ THUY LOl S 6 58 - 2020
I KHOA HOC ^ E M i E i I M
Cay mang tay co tu6i tho khoang 7 nam, chi trong 01 lan sau khoang 5 thang co the cho thu hoach; cac loai cay tr6ng khac nhu lac, banh la, cii cai,w... trdng theo mua vu; mSi nam hi 2 dSn 4 vu. Cac cay trong can (rau) duoc tuai hang
ngiiy. Doi voi cay mang tay, thich hgp cho tuoi nho giot; cac cay con lai thich hop cbo tuoi phun mua ap luc thap. Tong lugng nuoc tuai cho kbu vuc du an khoang 14.888 m7ngay; trung binh khoang 50 mVha-ngay.
Thang | 100 ha 1
50 ha 1 SO ha 1
Bang 1: Cff c4u cay trdng 10 1 11 1 12 1 1 1
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miia vu khu dy 2 1 3 1 4
an hi€n tai (nam 5 1 6 1
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Car6t 1 Cai cii Bang 2: Co ciu cay tr6ng mua vu khu du an trong tugng Iai (sir- dung fle thiet ke) Thoi gian
(thang) 10 11 12 1 2 3 4 5 6 7 8 9
250 ha ^ ^ ^ H ^ ^ ^ ^ ^ ^ ^ F M a n s t ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ H 50 ha ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ H | Diralunl^haiihlld.... . ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ H
Bang 3: Nhu cau nuo'c cua cay trong trong tugng lai
•.i|g
Man^ Tay Nlio gioi
39,7
+ Miic tudi ldn nhat 70,6 m /ha; mirc tudi nhd nhit 39,7 mVba.
+ iVIiic tudi thidt kg Mtk^ 49,7 mVba. Vdi cay trdng rau mau, cbiing ta can ap dung ludi hang ngay; vdi dac tinb cay trdng, dac digm thd nhudng khu vuc du an la dat eat, ap dung mire tudi nhd la phii hgp; vi vay chiing ldi lay miic tucd thiet ke trung binh mdi lan la 50 m /ba-lan gan sat vdi mirc iLrdi thiet kg lam co sd tinb toan cac budc tidp theo; tdng miic tudi trung
binh ngay la 50 m /ha-Ian* 300 ba=
Hesd tu&i; 0.57l/s-ha.
r n j T^b™ap l l H(|yngdtf
Hinh 2: Sa dd edp nu&c
TAP CHi KHOA HOC v A CONG NGHE THUY LOI SO 58 - 2020
KHOA HOC
2.3. Xac dinh dung tich k^nh lang (a) Cdc thdng sd ddu vdo di tinh todn:
+ Thai gian hoal dpng mdy bam cdp ngudn:
16h/ngdy
+ Diin tieh khu du dn 300 ha; Q ySu cAu ^ 15.000 m^/ngdy; Qbam^ 1000 m^/h + Cao trinh nguong dap ddng Tudn Tu;
+2.1m
+ Cao do mat dudng thiet ke;
+ 4.0m
+ Cao dp day sdng vi tri tuyen edng vdo bi ldng- 0.0 m
(b) Kich thudc cong trinh ldng
Do due duge xii ly bang phuong phap ling ngang.Tdng dien ticb mat bang eiia b l ling ngang dupe xac dinb theo cdng Ihirc:
F.-i^(„^)
3,6.U„
Trong do:
+ Qtk! Luu lupng nude dua vao b l ling (mVh), Qtk-lOOOmVh
+ a : He sd sii dung thg tieh ciia b l ldng l i y bang 1,3.
+ Uo : Tdc dp roi cua can d Irong be ldng (nim/s). Chpn Lfo^O,5min/s
F-l,3xlOOO/3,6xO,5= 722,2m-.
Chigu dai bg lang duge xac dinh theo cdng thiic:
+ Vtb: Tdc dp trung binh ciia ddng chay d phan dau cua bd lang, liy bang 6-8 mm/s; 7-10 mm/s; 9-12 mm/s tuong duong vdi nude it due, due vira va d u c . ^ c h g n Vtb = 10 mm/s.
+ H,b: Chigu eao trung binh ciia vimg lang lay trong gidi ban tir 3-4 m. Chpn Htb== 3,0m.
L-3,0xl2/0,5= 60 m
Vay chilu rdng b l B,b -722,2/72-12,0m.
Dg nude trong b l ling ngang chay vdi chl dp chay tang thi L> 5Btb
^ B t b < - - 60/12 =5 ^ D I dam bao cbi dp chay tang chpn L=^5Btb
-> xac dinb dupe L - 72,0 m va Btb ^ 12,0m Chpn kich thuae: Ngan ling dai L^75m, ngan chira nude dai 15m. Day kenh ldng b^6m; cao trinh -1,0m; kit ciu BT M200 day 10cm; 5m cd 1 khdp ndi bao tai nhua dudng. Dudi da lat chit mach day 30em, vira M75. Mai m=2, mdi ben mai cd 4 ddm chay dgc, kit ciu BTCT M250; ehan (cao trinh -1.0m) kich thudc 30x40em; tai eo cao trmh (+2.5m), cd 2 dim kich thudc 30*30cra , dinh mai (cao trinh 4.0m) dam kich thudc 30x30cm. Trung binh 20m CO 1 dim ngang, kit ciu BTCT M250, kicb thudc 30x30cm. Mai lat bdng tam BTCT M250 due san, kich thudc 40x40x15cm; dudi Idt da dam 1*2 day 10cm. Bac len xudng: (2 eai) rdng 2m; rdng 33cm, cao 17cm; ket cau BT M200, day 15cm. Co cd kich thudc 2m, kit c i u BT M200 day 20cm, dudi da dam 1 x2 day 10cm.
D u d n g quan ly bao quanh cd kich thudc B - 4 m ; k i t c i u BTCT M200 day 20cm;
d u d i da dam lot day 10cm. Bao ngoai cd ranh tieu n u d e kich thudc 40x60cm; kgt c i u day BT M150 day 10cm; dudi da dam Idt day 5cm.
Ngan giiia bg lang vdi bg but tram bom cap 1 bdng dap dang dang dap Iran dinh rpng, b=l,0m, cao trinh dinh 1.5m; day rdng 2,0m, cao trinh -1.0 m; kit can BT M150. Noi tigp be hiit la khoang bg lang keo dai 15m, khoang nay cd kgt cau nhu be lang.
TAP CHf KHOA HOC VA CONG NGHE T H O Y LOI S6 58 - 2020 57
Hinh 3: Mat bang vd eat ngang kinh ldng 2.4. Tram bom cSp 1
Tram bom thiet kg kieu budng khd, may bom ly tam true ngang. Cao trinh san may lira chgn dam bao chigu cao hut ciia may bam (3.8m). Dg dam bao may an loan trong trudng hgp cd lu Idn, xay dung budng khd, cao trinh dinb tudng vugt qua mue nude kigm tra 1% (7.0m). Day va ludng bdn den cao Irinh 7.0m cd ket cau BTCT M250; pban tren cao trinh 7.0m Nba may khung BTCT M250, tudng bang gach xay M50 day 22cm.
Cao trinh muc nude min thigt kg 0,0m; cao trinh muc nude thiet ke (MNTK: 1,7m). Cao trinh day be hiit -1,0m.
Bd tri 5 may (cd 1 may du pbong) cdng suat Q-250 mVb H-40m; ddng co P-44kw. Ong but: D 300 mm; Ong diy: D 250 inm; dng day ciia 5 may bom chap vao ong dudng kinh D-500 va ndi vao dng nhua DK 500, HDPE PN 10 day len 15 bg tmng gian.
Hinh 4: Cdt doc tram bam edp ngudn 2.5. Tinh toan thiiy luc he thong cap nuffc len 15 be chua
Hinh 5: Sa do cdp ngudn len 15 bi
58 TAP CHi KHOA HOC v A CONG NGH^ THUY LOI SO 58 - 2020
KHOA HOC il?(c|;M!h
Bang 1: Thong so tram bffm cSp 1 TT
1 2
Cac tnrang hgp tinh toan cap nuac C4p ddng thai 15 be Cap luan phien cho cum 5 be
Hi (m) 0,23 0,23
Hx (m) 0,7 0,7
Hdi (m) 8,6 8,6
Hdd (m) 15,05 21,09
He (m) 3,22 4,11
H.ktt (m) 27,81 34,73
H Ik chgn (m)
40 40
(5 m^y: Q=250 mVh; H=40m) Tinh toan chi tilt tong t6n th4t cot ap Luu lugng toan tram: 0,278 m^/s Duong kinh ong hiit: 0,3m Dudng kinh dng xa tren tuyen: 0,5m Sd lugng bom van hanh: 04 Luu lupng 1 may bom: 0,069 m^/s He sd nbam C= 140
- Tdn that dgc dudng tir may bom ddn be chua, Hdd- 21,09m.
Trong do: L chilu dai cac doan dng (km) F: tdn thil dpc dudng don vi (m/km).
Tdn thdt cue bd tir may bom ldn bg;
Hcb = 3,84 m.
+ Chenh cao dia hinh tir be hiiit len be:
Hah = Hdh ^ Zbx - Zbhtk - 8,4 m Zbx = 8,4 m; Zbhmm ^ 0,0 m Xac djnb tbdng sd ddng co
„ 0.l63*Q*H*k , , , P = - 44 kw
Trong do: Q: luu lugng may bom (mVphiit) H: Cdt nude may bom (40m)
K: h e s d (1,1-1,2) r[: Higu suat may bom ^ 7 0 %
2.6 Phan tich Ina chgn k i t cau va dung tich be chua trung gian
Phuong an chgn b l cbiia dap iing tudi chii ddng cho eac loai cay trdng trong khu vuc du an. Mdi bg cd dung tich 500 m^ phu Iraeh 20 ha.
Til' tinh loan thiiy ndng vdi bien pbap tudi nbd gipt eho cay mang lay, cac cay cdn lai tudi phun mua; miic tudi trung binb Irong toan khu la 50 m'^/ha; tdng lugng nude tudi cua 1 bg phu trach ludi trong ngay la 1000 m^. Vdi ky thuat tudi tiet kiem nude, phun mua va nbd gigt; tbdi gian tudi hgt eho dien tieb 20 ba la 8h; vdi lupng tich trir 500 m^ nbu vay bg chiia mdi dap iing dupe 50% ygu cau tudi trong ngay, vay can bom nude bd sung trong thdi gian nghi giiia 2 ldn tudi (tir 1 l-14b); thai gian bom bd sung ddy cbo mdi be la 30 phiit; cbo 15 b l bit 7h30 phut. Vdi 15 bl, tdng dung ticb trir la 7500 m ^ dam bao tbdi gian tuai la 4b cho loan bd khu; trong 4h tuoi, thdi gian bom bd sung la 4000 mVh; thdi gian nghi trua lir llh-14h chilu bom bd sung la du nude tudi cho toan bo khu tudi trong ngay. Nhu vay dung tich b l trung cbira trung chuyen V=500 m"* la hgp ly.
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Hinh 6: Quan he luong nude tirai vd luang nuac bam vao \e
+ Bi chiia trung gian gian c6 dung tich 500 m dang bS dao, lot HDPE chdng thim. Tong co 15 b l dugc chia phan tan cho cac khu tuoi, m6i b l phu trach trung binh 20 ba.
BS CO kich thuac hinh vuong; day 12xl2m, sau 2,8m; mai m=2. Vi tri nuac xa vao va vj tri dat 6ng hut may bam cip 2 b5 tri d6 BTM200;
TAP CHf KHOA HOC VA CONG NGHE THUY LOI SO 58 - 2020 59
KHOA HOC
^Mm
day 15cm, rdng 2m, bd tri bac len xudng. Tren Nude vao b l bd tri 1 van dat trong bd van t bd cd hang rao ludi B40 bao quanh bao ve. t i m n i p bao ve.
Hinh 7: Mat bdng vd cdt doc be chua 500 m\- dnh bi da hodn thien
2.7 Tinh toan thiet k6 t r a m bom cap 2 Toan bd khu tudi cd dien ticb 300 ha, dupe chia thanh 15 khu, mdi khu ed dien tich khoang 20 ha, mdi kbu dupe phu trach bdi tram bom cap 2 cd cdng suat nhu nhau, chung tdi tinh thi diem cbo 1 khu mau ed dien tich 20ha.
- Mirc tudi m ^ 50 mVba - Thda gian tudi T1^8 tieng
- Dien ticb tudi ludn phien D2 = 2 ba ^ 20000 m"
+ Tbdi gian dh tudi cbo D2 la: 8 x 2/20 - 0.8 tigng = 48 phiit
u. Sff dd tinh todn
Tinb toan dai dien cho 1 khu, so dd hinh 10
OM
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N I
N3 N5
N * NG
f
»• 1
Hinh 8; Sa do bd Iri he thdng tuai mat rupng
b. Thiet ke mdu he thdng tu&i phun mua mdu cho 20 ha
*. Thdng sd ddu vdo
- Voi phun mua: Chgn vdi luu lugng qv ^ 100 l/h - Ban kinh phun mua: R=2.8 m
- Bd tri eae vdi kidu hinh vudng. Kboang cac cac vdi la a - V2 .R - V2 .2.8 = 4 m - Mdt vdi phun phu trach tudi duge dien tich 4 x 4 - 1 6 m ^
- Chia dien tich 20 ba tbanh 10 khu nhd mdi khu tudi dien tich 2 ha, miic tudi cho 2 ha la 5 0 x 2 - 100m\
Sd voi phun mua bd tri trong 2 ba la: 20000 / 1 6 = 1250 vdi.
Vdi luu lupng qv = 100 l/h, 1250 vdi tudi dugc trong 1 b la: 1250 xlOO = 125000 l/h = 125 mVh
May bom cap cho he tbdng tudi chpn Q = 125 m"^/h Thdi gian de 1250 vdi tudi vdi luu luong qv = 100 l/h tudi dil 100 m^ la:
T = 1 0 0 / 1 2 5 - 0 , 8 b = 48 pbiit
Kdt luan: 10 kbu tudi se dugc tudi ludn pliign nbu
60 TAP CHi KHOA HOC VA CONG NGHE THUY LOl SO 58 - 2020
KHOA HOC ^ E I ^ ^ J B i I ^ B
sau: khu 1 tudi 48 phiit rdi chuydn sang khu 2 tucri Tdng 10 khu tudi hit thdi gian: 10 * 48 - 480 trong 48 phiit, iin lugt cbo den bet 10 kbu. phiit - 8 gid
Hinh 9: Sa dd bd
MAT BANG BLOCK T U 3 I PHUN MUA 21
M A T B A N G H A M B O M i - ^ — \ — .
Hmh 10; Mat bang khu md hinh tu&i mdu phun mua eho 20 ha
c. Thiet ke mau he thdng tu&i nhd giot mdu cho 20 ha
* Thdng sd ddu vdo
Dien ticb mdi bg pbu trach la 20ha May bom cap eho he thdng tudi chpn Q - 1 2 5 m /b - Vdi nhd gipt: Chgn vdi D-16iTim; luu lupng qv = 2 ITi, khoang each vdi nhd gipt 30cm.
- Khoang each hang: R—1 m
- Chia dien lich 20 ha thanh 10 kbu nhd mdi khu tudi dien tich 2 ha, mirc tudi cho 2 ba la 5 0 x 2 - 1 0 0 m l
- Sd lugng dng nhd gipt bd tri trong 2 ha la:
200 dng X 100m = 20.000 m.
- S6 vdi nhd gigt: 20000m/0,3 -66666 vdi - Luu Iugng nbd gigt la: 66666 voi x 2 l/h = 133000 l/h-I33mVh
-Tbdi gian d l 20.000 m dng nhd dupe luu lugng dil 100 m^ la:
T = 100/133-0,76 h = 46 phut
tri vdi phun mua
Vdi may bom cd cdng suit 125 mVh thi thdi gian ludi cho 1 khu cd dien tich 2 ba la:
T - 1 0 0 / 1 2 5 - 0 , 8 h =48 phiit.
Ket luan: 10 khu tudi se dugc tucd ludn phign nhu sau: khu 1 tudi 48 phiit rdi chuygn sang khu 2 tudi trong 48 pbiit, iin lugt cho den bet 10 khu.
Tdng 10 kbu tudi bit thdi gian: 10 * 48 - 480 pbiit = 8 gid
Nbu vay may bom cap 2 chpn Q-125 m^/h la pbii hgp.
*. Tinh todn thuy lue duang dng a.. Bd tri he tbdng tudi
Cum d i u moi: bd tri 3 thiet bi Ige dudng dng Q=40-60 m'/h
Van xa khi: 01
Ong tudi: Dudng dng ehinh DN 180mm Dudng dng nbanb den eae kbu DN 160mm Ong nbd gigt ndi true ligp vao dudng dng DN 160mm
Gia sir khu miu 20 ha ed kich thudc 400m x 500m (hinh dudi)
11
Hinh 11; Mat bdng khu mo hinh tu&i mdu nhd giot cho 20 ha
TAP CHf KHOA HOC VA CONG NGH$ THUY LOI Sd 58 - 2020 61
3. KET LUAN
Du an tich hap cac cong nghe :
Hinh 12: Khu tuai nho giot cho cdy mdng tdy da hodn thdnh
tjgt kiem a An la du iTiinh va nuac cho 300 ha rau an toan tap trun;^
Hai, huyen Ninh Phuoc, tinh Niiiii Thuan an thuoc loai du an nong nghiep ihoii^
la du an trong diSm dugc lanh dao Bo^Nong nghiep va Phat triln Nong thon quan tam chi dao, day cung la du an cdp nuoc tucfi cho rau an toan tap trung co quy mo Ion nhat nuoc hien nay. Du an da tich hgp cac cong nghe tii lang, lgc nuoc, tru nuoc, cSp nuoc din he thong tuoi tien tiSn ti6t kiem nuac cho cay trtog, theo ehuoi gia tri gia tang. Du an dugc trien khai tir cufli nam 2016, den nay da hoan thanh di vao khai tbiSc su dung se som phat huy hieu qua.
TAI LIEU THAM KHAO
[1] Tong cue Thuy lgi (2018) Quy trinh tuai phun mua cho lac, banh, toi kbu vuc mien Trung, quyjt dinh ban banh ap dung s6 402;403;404/QD-TCTL-KHCN, ngay 19/8/2018.
[2] Vien Nuac, Tuai tieu va Moi truang (2019) "ho so du an xay dung ha tang ky thuat phue vu san xuat rau an toan tap tmng, xa An Hai, huyen Ninh Phuae, tmh Ninh Thuan".
[3] Bao cao ke boach san xuat nong nghiep niim 2019, xa An Hai, huyen Ninh Phuae, tmh Ninh Thuan.
TAP CH[ KHOA HOC VA CONG NGH^ THUY LOI S 6 58 - 2020
