摘要
采用田间试验对盐渍化棉田不同生育时期、不同深层土壤盐分的动态变化进行了研究,结果表明;膜下滴灌在连续的滴水作用下可在一定时间内降低土壤盐分,并不能从根本上减少土壤盐分;滴水开始后,水平方向上距离滴头越近土壤盐分积累越少,垂直方向盐分的积累主要在40~60cm土层,60~100cm土层盐分积累受膜下滴灌影响较小;不同土壤深层间、不同生育期间土壤盐分变化都达到了极显著水平。
Field trials on salinization cotton with drip irrigation under the plastic mulch in different growth stages and Soil depth were studied dynamics changes in soil salinity. The results showed that. continuous irrigation can reduce the soil salinity in a certain period of time, not fundamentally reduce. With the beginning of irrigation, the accumulation of salt in horizontal direction under the drop point is least than any other position. The accumulation of salt in vertical direction increase at the soil layers from 40 to 60 cm, but the one at the soil layers from 60 to 100 cm change a little. It reached a very significant level between the soil depth and different growth stages in soil salinity.
出处
《灌溉排水学报》
CSCD
北大核心
2010年第1期136-138,共3页
Journal of Irrigation and Drainage
基金
国家科技支撑计划课题(2007BAC17B04
2006BAD21B02)
石河子大学高层次人才科研启动资金专项课题(RCZX200722
RCZX200728)
关键词
膜下滴灌
水分
盐分
动态变化
mulched drip irrigation
soil water content
soil salinity
dynamic change