宁夏引黄灌区农田退水回灌对土壤盐分影响的试验研究  

Effects of Salinity Changes upon Farmland Return Flow Reusing in Ningxia Yellow River Water Irrigation District

作　　者：穆鑫[1] 吕谋超[2] 温随群[1] 吴海卿[2] 朱东海[2] 马克星[2] 

机构地区：[1]华北水利水电学院,郑州450011 [2]中国农业科学院农田灌溉研究所,河南新乡453003

出　　处：《灌溉排水学报》2011年第1期76-79,共4页Journal of Irrigation and Drainage

基　　金：国家水体污染与治理科技重大专项项目专题(2009ZX07212-004-01-3)

摘　　要：在小麦整个生育期内,在相同灌水定额条件下,设置4种不同灌溉方式进行对比分析研究。采用退水回灌,在一定时间内会增加0~30 cm的土壤盐分,尤其对0~20 cm的土层影响较大,对其他层次的影响随着深度的加大而减小;在拔节期和灌浆期,连续使用退水灌溉会使春小麦减产,只在拔节期使用退水回灌能够增产。Throughout the whole growth period of wheat,setting four different irrigation settles under the same irrigation quota condition,comparing and analyzing the effect of soil salinity upon farmland return flow reusing,and analyzing the wheat output,the result showed： farmland return flow reusing would increase the soil salinity at 0 to 40 cm,especially had more effect on the soil at 0 to 20 cm.And the influence will decrease with depth increased.During the period of jointing and filling,using the farmland return flow to irrigate continually will cause the spring wheat output dropped,only irrigated with farmland return flow at the period of jointing will increase spring wheat output.

关 键 词：宁夏引黄灌区 退水回灌 盐分变化 电导率 土壤盐碱化 

分 类 号：S156.46[农业科学—土壤学]