不同灌水量对温室膜下滴灌黄瓜土壤水分动态的影响

摘要

通过温室膜下黄瓜滴灌试验，研究了不同灌水量对土壤含水率和土壤水分动态的影响。结果表明：不同处理下黄瓜生育期内土壤平均含水率先变小后变大，缺水灌溉推迟，严重胁迫黄瓜生长，推迟结果盛期；土壤各层含水率在结果盛期最小；不同处理下黄瓜生育期内土壤剖面平均含水率在距地表10 cm处最高。%The experiment was conducted to study the effect of different irrigation amount on soil moisture and water dynamics of greenhouse cucumber with drip irrigation under film mulching. The results showed that the average soil moisture content in cucumber growth period under different treatments first became lower,and then higher,water deficit irrigation stressed the growth of cucumber and delayed the fruit stage. Soil moisture content was lowest at the fruit stage. The average moisture of soil profile was highest in the depth of 10 cm from the earth surface.