干旱地区农业研究2013，Vol.31Issue(1)：84-88,5.
江淮丘陵季节性干旱区灌溉与施氮量对土壤肥力和水稻水分利用效率的影响
Effects of irrigation and nitrogen fertilization on soil fertility and water use efficiency of rice
摘要
Abstract
The effects of irrigation and nitrogen (N) fertilization on soil fertility and water use efficiency (WUE) of rice were studied in an experiment of pool culture within rain-proof shelter. Samples were collected from treatments under control and conventional irrigation receiving N application of 90 kg·hm-2, 180 kg·hm-2 and 270 kg·hm-2. The results showed that irrigation and nitrogen fertilization significantly influenced chemical and microbiological characteristics of soil, and yield and water use efficiency of rice. Compared with conventional irrigation, organic matter, total N, total P, total K, available P, available K, WUE, quantity of bacterium and quantity of fungus increased while available N and quantity of actinomycete decreased under control irrigation. With the increment of N application rates, organic matter, total N, available N, quantity of fungus, quantity of actinomycete increased, while total P, total K, available P, available K, quantity of bacterium decreased. However, yield and water use efficiency of rice reached the highest at 180 kg·hm-2 of N applied. It was concluded that control irrigation combined with suitable N application rate (180 kg·hm-2 ) could benefit rice production by reducing cost and gaining high yield.关键词
水稻/灌溉模式/施氮量/水分利用效率/土壤化学特性/土壤微生物学特性Key words
rice/ irrigation/ nitrogen application/ water use efficiency/ soil chemical characteristics/ soil microbiological characteristics分类
农业科技引用本文复制引用
肖新,储祥林,邓艳萍,黄璐,赵言文,汪建飞..江淮丘陵季节性干旱区灌溉与施氮量对土壤肥力和水稻水分利用效率的影响[J].干旱地区农业研究,2013,31(1):84-88,5.基金项目
安徽省青年科学基金项目(10040606Q12) （10040606Q12）
农业部公益性行业(农业)专项经费项目(201103004) （农业）
