干旱地区农业研究2012，Vol.30Issue(6)：139-144,6.
有机无机配施对旱地春玉米产量及土壤水分利用的影响
Effects of combined application of organic and chemical fertilizers on the yield and water utilization of spring maize in dryland
摘要
Abstract
Field experiment was settled to study effects of combined application of organic and chemical fertilizers on the yield and water utilization of spring maize during summer drought in dryland. The results showed that the yields were more significantly increased from 1 .49 t/hm to 2.63 t/hm with the fertilizers application than the treatment without applying any fertilizer (CK) , the WUE( water use efficiency) were from 41 .3% to 72.3% and the PUE(precipitation use efficiency) were from 45 .7 % to 80.7%. Furthermore, the yield (5.89 t/hm2), WUE [13.15 kg/(hm2·mm) ) and PUE [14.39 kg/(hm2·mm)] were the highest with the combined application of organic and chemical fertilizers. The soil bulk density in 0 ~ 40 cm soil depth decreased significantly with the organic fertilization while the soil total porosity increased. Hence, organic fertilizer effectively enhanced the capacity of water retention in the depth of 0 ~ 40 cm soil layer. In the early period of summer drought, the soil moisture in the depth of 0 ~ 60 cm was improved with the fertilizer application, especially the combined application of organic and chemical fertilizers because the normal precipitation and soil storage. Meanwhile, the soil moisture in the depth of 60 ~ 200 cm soil layer did not change obviously. The soil moisture of 0 ~ 200 cm soil layer decreased constantly with the summer drought intensifying and the surface soil moisture were similar among treatments. While the soil moisture in deep soil depth (40 ~ 200 cm) of the fertilizer treatments decreased much more than CK because of faster growing and more water consumption.关键词
有机无机肥/春玉米/夏旱/产量/水分利用效率Key words
organic and chemical fertilizers/ spring maize/ summer drought/ yield/ water use efficiency( WUE)分类
农业科技引用本文复制引用
陈刚,王璞,陶洪斌,张中东..有机无机配施对旱地春玉米产量及土壤水分利用的影响[J].干旱地区农业研究,2012,30(6):139-144,6.基金项目
农业部公益性行业(农业)科研专项(201203031) （农业）
