膜下滴灌新疆棉田土壤盐分的运移规律

主要通过定时定点取样与室内化验就不同土壤质地和不同滴灌年限两方面对新疆棉田膜下滴灌盐分运移规律进行研究,结果表明:对于不同土壤质地,壤土中的盐分分布较粘土中的呈更规律的变化;不同滴灌年限中滴灌年限越长,棉田中的盐分积累就越多,分析结果显示,定期大水漫灌洗盐、做好春灌水工作以及恢复排碱渠作用是土壤脱盐的必要手段。

Studies on the Condition of Drip Irrigation in the Secondary Stalinization Cotton Field in Xinjiang

This paper mainly analyzed,under the condition of drip irrigation from two aspects,i.e.different soil texture,different drip period,from vertical direction and from horizontal direction,the salt transfer law under the condition of drip irrigation in the secondary Stalinization cotton field.The results showed that different soil texture,the variation of accumulation of salt in loam has more regularity than the one in the clay;and the more the drip time,the more the accumulation of salt in cotton field.Lastly,it was believed that three ways may be the necessary method for desalination,viz.using flood irrigation to flush salt periodically,executing the irrigation in spring and resuming alkali-drainage-channel.