干旱地区农业研究Issue(6)：52-57,6.DOI:10.7606/j.issn.1000-7601.2015.06.09
半干旱区玉米根域集雨种植模式下的施肥效应研究
Effect of fertilization under root-zone rainfall micro-collecting planting pattern of maize in semi-arid region
摘要
Abstract
In order to consummate the root-zone rainfall micro-collecting planting pattern of maize in semi-arid re-gion and utilize water and fertilizer coupling,four levels of fertilizations were set up,namely high level (H:1 279 kg· hm -2),middle level (M:919 kg·hm -2),low level (L:460 kg·hm -2),and no fertilization (CK:the control),to in-vestigate the effects on production,nutrients utilization rate and the fertilizer partial factor productivity of maize.The re-sults showed that the production of maize was enhanced with the increase of fertilizer rate,from 4.70% to 39.48%. Compared with the control,the absorptive amounts of N and P by fertilization were increased,up to 101 .51%.With the increase of fertilization,the nutrients utilization rates changed in a parabolic pattern,whereas soil nutrient contribution rates and the fertilizer partial factor productivity both tended to be decreased.Based on the analyses of economic yields and fertilizer input costs,the middle level fertilization (N:300 kg·hm -2 and P2O5:150 kg·hm -2)sounded an appro-priate approach under the root-zone water micro-collecting planting pattern in the semi-arid region.关键词
春玉米/根域集雨种植/施肥量/养分利用率/半干旱地区Key words
spring maize/root-zone water micro-collecting planting pattern/fertilization rates/nutrient utilization rate/semi-arid region分类
农业科技引用本文复制引用
李博宇,李玉玲,张鹏,贾志宽,王俊鹏,任小龙..半干旱区玉米根域集雨种植模式下的施肥效应研究[J].干旱地区农业研究,2015,(6):52-57,6.基金项目
“十二五”国家科技支撑计划课题“西北旱作区抗逆稳产旱作农业技术集成与示范”（2012BAD09B03）；“十二五”国家科技支撑计划课题“西北旱区农业水土资源潜力与高效利用模式集成及应用”（2011BAD29B09）；国家自然科学基金青年项目（31201156）；“十二五”公益性行业项目（201302104）。 （）
