6ISO13457:2000.Agricultural irrigation equipment-Water-driven chemical injector pumps[S].
7Burt C,Connor K O,Ruehr T.Fertigation[M].Irrigation Training and Research Center,California Polytechnic State University,San Luis Obispo,CA 93407.1998.
8Lee I B,Fynn P,Short T.Development and evaluation of a computer-controlled fertigation system[J].Applied Engineering in Agriculture,16(3):279-284.
9Bar-Yosef B.Advances in fertigation[J].Advances in Agronomy,1999,65:3~5
10Alva A K,Paramsivam S,Graham W D.Impact of nitrogrn management pactices on nutritional status and yield of valencia orange trees and groundwater nitrate[J].J.environ.Qual.,1998,27(4):904-910.