摘要
针对新疆棉花膜下滴灌条件下不同灌溉定额和灌水周期对土壤水盐变化的影响进行了大田试验。试验设置了3个灌溉定额和3个灌水周期;观测内容有土壤水分、盐分及棉花生长状况和产量。试验结果表明:土壤含水量随着灌水周期减小而增大,灌水周期为5 d的处理的土壤保持在最适宜含水量;较小灌水周期使得棉株内行和外行土壤含盐量持续降低,降幅相对较大;同一灌溉定额下,较小灌水周期产量较大;中量灌溉定额获得最高产量。
In this paper, the experimental research on the effects of various irrigation quota and irrigation frequency of mulched drip irrigation of cotton in Xinjiang on moisture and salt change is carried out. Three irrigation quotas and three irrigation frequencies are set in this experiment. The observation content includes moisture, salt of soil, growth status and yield of cotton. The results show that soil moisture increases with the increases of irrigation frequency ;the soil moisture content of the treatment, in which the frequency is 5 days, is in the most appropriate level; higher frequency effectively reduce the salinity of the inside and outside of cotton; under the condition of same irrigation quota, the higher frequency produces higher yield than the lower frequency, and medium irrigation quota produces the highest yield.
出处
《节水灌溉》
北大核心
2009年第7期4-7,共4页
Water Saving Irrigation
基金
国家"863"计划"水盐调控精量灌溉技术"(2006AA100207)
关键词
棉花
膜下滴灌
灌溉制度
水盐变化
cotton
mulched drip irrigation
irrigation scheduling
moisture and salt change
