波涌灌溉土壤水氮分布的田间试验研究  

Field Experimental Study on Soil Water and Nitrogen Distributions under Surge Flow Irrigation

作　　者：孙秀路 黄修桥[1] 李金山[1] 韩启彪[1] 陈震[1] 姚欣[1,2] 

机构地区：[1]中国农业科学院农田灌溉研究所/河南省节水农业重点实验室,河南新乡453002 [2]中国农业科学院研究生院,北京100081

出　　处：《灌溉排水学报》2015年第1期33-38,共6页Journal of Irrigation and Drainage

基　　金："十二五"国家科技支撑计划项目(2012BAD08B02)

摘　　要：采用小区试验研究了不同施肥方式下连续畦灌和波涌畦灌的土壤水氮空间分布状况及变化趋势,分析了灌水施肥后不同土层内土壤水氮分布的均匀性。结果表明,灌水后波涌灌较连续灌土壤水分分布均匀,尤其是表层土壤;灌溉施肥处理下土壤中硝态氮分布的均匀性明显大于撒施处理,波涌灌灌施结合效果更佳。Field experiments for border irrigation and surge flow irrigation under different fertilizing meth- ods were performed to analyze the spatial distributions of soil water and nitrate nitrogen, and evaluate the distribution uniformity. The results showed that the distribution difference of soil water was small under surge flow irrigation, especially in the surface soil layer. The distribution uniformity of nitrate nitrogen under fertigation was significantly higher than that under broadcast fertilizer. The advantages were high- lighted under surge flow fertigation.

关 键 词：波涌灌溉 灌溉施肥 水氮分布 均匀性 

分 类 号：S152.7[农业科学—土壤学] S153.6[农业科学—农业基础科学]