Page 222 - 《水资源与水工程学报》2023年第4期
P. 222
2 1 8 & ' ( ) & * + , - 2023 $
JtypeisB(good)andGtypeisD(unqualified)whentheinletpressurefallintherangeof1-11m.
3
Whenthelayinglengthis100m ,thequalityofJtypedripirrigationbeltisA(excellent)undertheinlet
pressureof1-11m;GtypeisC(general)undertheinletpressureof1-3m.Withtheuniformityco
efficient E andC asthediscriminantindices,theirrigationuniformityofJtypedripirrigationbeltisthe
u
u
lowestwhenthelayinglengthis300m,anditisthehighestwhentheinletpressureis9-11m.Based
ontheabovecriteria,theoptimalcombinationoflayinglengthandinletpressureofdifferentdripirriga
tionbeltsareasfollows :thelengthis200m,theinletpressureis9mforJtypedripirrigationbelt;the
1
lengthis200m ,theinletpressureis11mforJtypeandJtypedripirrigationbelt;thelengthis100
2
3
m,theinletpressureis7mforGtypedripirrigationbelt.
Keywords:dripirrigation;importedlowdischargedripirrigationbelt;irrigationuniformity;laying
length;inletpressure
|Æ。
1 ./01
2022 4—10 XÞJßà#áàõ´Â
]´´¼½ÜÍ´@=¹, þÿE@、 Eq、 õ´!"F%HàÕXF¯¾ûo¼)]´
N、 vTCt、 X._qÑ [1-3] , XÞ^¾ NO)*, ]´`aóóË8Zå 295m, ]´`
{ [4-5] 、 (x [6-7] 、 [8-9] §½ýþ½®¢¥å g}ÈW!Jè½[r, /Iê¸÷YM 1 é。
¬。!Üx]´`óË8Zñ、 hÁØWý/ù !»)*ÿW#óW·1´@¡ZÙÚ。£ÿ
Z§、 1(NýZI、 ¼ìlTCX、 ³oVýê ;<ï, ´@5[Z´o]´W#´@¡Z}¶
=^®I, Ão£Á]´H«^QR。²Dp .^oû®, I+, ±~ê>óË8ZBØÈð
ÁÔõÇqêëSIÎBXFêLËW#]V i^$Zýo(dZ]´`´@5[Z^ab;
]´H«^'~, 8ó9]´`ó˨?'~;<, <, ox%&#]´`´@¡Z, ®9]´NO¾
!´@¡Z´cOPýþR@X, ´LgÛ!^ û8J¾ª\])&I。
N 1 FÍVÎ~7ÍVÎÏж\ö÷N( :m)
ËÌ]´W#Ä}¶Ô¶Íâ, ´@5[ ËÌ@X¬(x 5m。IW#óË8Z、 ØÈð
[12]
Z´¼|Æ®, gûX^´@5[ZQ iK´@5[Z^|W¼NÃÝ|±。ÃA 、
åýþEJ、 u¡^*^, !9K]´W#Ôõ¨ =q> [13] ?ØÈðio´@5[Z^abû
uEì [10] ; ´@5[Zû¤^ÙÚ, êM (, óË8Zo´@5[Zab_`。Å?v
I¨ýþOJ,hi@·x¦ÎBö·dH^Ù [14] ?y͹]´`^´@5[ZqxË>¹
Ú, }e'ÎDº%。¶! [11] ?, ?ou ]´`, k°x8ó9óË。Ð!¾ [15] ;<
à]´W#^´@5[Z、 ÔÃW#Ô¶¨u, ]X 'i, ¤ðW#¢]XdBWùêIx 0.5 ^]´