膜下滴灌棉田不同春灌淋洗定额压盐效果分析

Analysis on Desalination Effectiveness in Different Leaching Quota for Drip-irrigated Cotton Field under Film

随着节水灌溉技术的发展,新疆节水灌溉面积已达到178.53万hm2,其中膜下滴灌棉田面积达到59.133万hm2。滴灌棉田盐碱化是节水灌溉中产生的新问题,春灌是水利措施改良盐碱地的方法之一。通过对新疆巴州试验站膜下滴灌棉田的现场试验数据进行分析,得出合理的春灌淋洗定额,以减轻盐碱对土壤的影响。

With the development of water-saving irrigation technology, the farm area with water-saving irrigation in Xin- jiang has reached 1. 7853 million hm2, and the drip-irrigated cotton field under plastic fihn has reached 59. 133 million hm2. The salinization of the cotton field with drip irrigation is a new issue in the water-saving irrigation, and the spring irrigation is one of the measures for saline-alkali soil improvement with water conservancy. Through analyzing the field test data cotton field under plastic film in Bazhou Experiment Station of Xinjiang, the reasonable leaching quota of spring irrigation is obtained so as to mitigate the effect of salinization on soil.