干旱地区农业研究2016，Vol.34Issue(2)：81-87,7.DOI:10.7606/j.issn.1000-7601.2016.02.13
沟垄集雨种植模式下谷子种植密度对土壤水分及产量的影响
Effects of planting density on water consumption and yield of foxtail millet under ridge-furrow rainfall harvesting planting mode
摘要
Abstract
In order to explore the yield potential of foxtail millet under different planting densities ,cv .Datong 29 was field tested in semi-arid southern Ningxia province in 2013 and 2014 ,and three planting densities were set under the ridge-furrow rainfall harvesting planting mode .The results showed that water consumption ,yield and WUE were all en-hanced with the increase of density in both years .Water consumption was reduced in 2014 when amount of precipitation was decreased and the difference between yields by middle and by high densities was not significant ( P>0 .05 ) .In both years ,water supply capacity at harvesting stage ,soil water storage of 0~200 cm underground and soil moisture during jointing stage became all decreased with the increase of density .With the increase of planting density ,WUE in 2013 with high precipitation was gradually increased;while in 2014 with low precipitation ,WUE by middle density was the highest ,reaching 24 .35 kg·mm-1·hm-2 .Average WUE in 2014 had a gain of 10 .37 kg·mm-1·hm-2 from that in 2014 .关键词
集雨种植/谷子/密度/水分利用效率Key words
ridge-furrow rainfall harvesting planting mode/foxtail millet/planting density/WUE分类
农业科技引用本文复制引用
刘启,贾志宽,连延浩,张旭东,任小龙,王俊鹏,韩清芳..沟垄集雨种植模式下谷子种植密度对土壤水分及产量的影响[J].干旱地区农业研究,2016,34(2):81-87,7.基金项目
“十二五”国家科技支撑计划课题（2012BAD09B03）；“十二五”国家科技支撑计划课题（2011BAD29B09）；陕西省科技统筹创新工程计划项目 （）
