摘要
[目的]研究调控沟灌条件下棉田沟、垄0～60cm深度土壤盐分变化。[方法]以南疆绿洲灌区棉花为研究对象,采用常规沟灌、调控沟灌和固定隔沟灌3种灌水方式,设3900、3600和3300 m3/hm23个灌水量。[结果]在相同水量(3900 m3/hm2)控制条件下,灌水前后各处理在0～60cm深度的盐分降低都较明显,其中常规沟灌比调控沟灌和固定隔沟灌的脱盐率低;在相同灌水方式下,在不同水量控制下,0～60cm深度上调控沟灌3600 m3/hm2的沟、垄灌后较灌前盐分都明显降低,且整个深度上的脱盐率均大于其他处理。[结论]从棉花生长综合效果来看,调控沟灌优于常规沟灌和固定隔沟灌。调控沟灌3600 m3/hm2的盐分变化更有利于棉花的生长,适合在当地推广。
[Objective] The research aimed to study the variation of soil salinity in the soil layer of 0-60 cm on cotton fields furrow and ridge which was under regulation furrow irrigation.[Method] Taken cotton as the object which was been widely planted in the south of Xinjiang oasis irrigation area,routine furrow irrigation（CFI）,alternate furrow irrigation（AFI）and fixed furrow irrigation（FFI） were adopted as irrigation method and three kinds of irrigation amounts of 3 900,3 600 and 3 300 m3/hm2 were selected.[Result] The soil salinity of all treatments after-irrigation under the same irrigation amount which was 3 900 m3/hm2 was significantly decreased in the layer of 0-60 cm compared With fore-irrigation.Desalination rate of CFI treatment was lower than that of AFI and FFI.With the same irrigation method,regulation furrow irrigation with different irrigation amount,the soil salinity after-irrigation of irrigation AFI 3 600 m3/hm2 was obviously decreased in the layer of 0-60 cm compared with fore-irrigation and desalination rate were higher than that of other treatments.[Conclusion] Based on the general effects of the cotton growth,AFI was better than other irrigation methods.The soil salinity content of AFI 3 600 m3/hm2 was in favor of the growth of cotton and was suitable for popularizing in local region.
出处
《安徽农业科学》
CAS
北大核心
2011年第28期17268-17270,共3页
Journal of Anhui Agricultural Sciences
基金
塔里木大学校长基金项目(TDZKSS1014)
关键词
南疆绿洲灌区
调控沟灌
棉花
生育期
土壤盐分
South of Xinjiang oasis irrigation area
Regulation furrow irrigation
Cotton
Growth period
Soil salinity
