苏打盐碱土种稻改良的水资源高效利用田间试验研究  

Experiment Research of Water Resources Utilization on Soda Saline-alkali Soil Improvement by Planting Rice in the Field

作　　者：张梅[1,2] 王宇[1] 赵兰坡[1] 韩兴[1] 王洪斌[1] 耿玉辉[1] 赵占军[1] 李洪丽[1] 叶青[1] 

机构地区：[1]吉林农业大学资源与环境学院,长春130118 [2]吉林省科学技术厅,长春130041

出　　处：《灌溉排水学报》2014年第1期132-134,共3页Journal of Irrigation and Drainage

基　　金：基公益性行业(农业)科研专项经费项目(200903001-06-2);吉林省科技厅发展计划项目(20120803);吉林省科技厅重大项目(20096028)

摘　　要：研究了泡田洗盐与水稻生育期排水措施对苏打盐碱土种稻改良的影响。结果表明,前2次泡田洗盐后土壤脱盐率增幅较大,之后幅度减小并趋于稳定;洗盐2次后,土壤含盐量为0.25%、ESP为31.6%、pH值为8.5,达到盐碱土种稻的"淡化表层"建立标准。处理Ⅱ、处理Ⅲ的耕层含盐量均小于0.3%,产量分别是处理I的2.04倍和2.06倍;水分生产效率为处理Ⅱ>处理Ⅲ>处理Ⅰ。泡田排碱2次和水稻生育期内排水1次是提高水稻产量和节水的有效措施。The effects of soil salt leaching by steeping field and drainage during the rice growth on the improvement of Soda saline-alkali soil were studied. The results showed that desalination rate increased greatly in the two previous soil salt leaching by steeping field, then the rate increased lowly. Through soil salt leaching by steeping field for two times, soil salinity reached 0.25%, ESP reached 31. 6% and p H reached 8. 5, which met the standard of ＂soil desalting surface layer＂. The soil salt content was less than 0. 3 % in the treatment II and treatment III, the yields in the treatment II and treatment III were 2. 04 and 2. 06 times as many as the treatment, and the water production efficiency was that treatment II 〉 treatment III 〉treatment I. Soil salt leaching by steeping field for two times and drainage for one time could improve the rice yield and save water.

关 键 词：苏打盐碱土 种稻改良 水资源 高效利用 

分 类 号：S156.45[农业科学—土壤学]