干旱地区农业研究Issue(4)：134-140,7.DOI:10.7606/j.issn.1000-7601.2015.04.21
河套灌区春小麦节水高产农艺措施优化
Optimized agronomic measures for water-saving and high-yielding of spring wheat in Hetao irrigation district
摘要
Abstract
Based on quadratic regression orthogonal design of four factors method ,This study established a quadratic polynomial regressionmodel for major agronomic practices of spring wheat in Inner Mongolia Hetao irrigation district .The results showed that effects of four agronomic measures on yield were in the order of sowing density >amount of phosphorus fertilizer>nitrogen rate>irrigation quantity ,and those on water use efficiency were irrigation quantity >sowing density>nitrogen rate>amount of phosphorus fertilizer .The optimizing combination agronomic measures for spring wheat in Hetao irrigation district are proposed as follows :seedling density 6 .675~7 .171 × 104 plants·hm-2 ,phosphorus rate (P2O5 ) 147 .0~175 .5 kg·hm-2 ,nitrogen rate (pure N ) of jointing stage 164 .5~186 .6 kg·hm-2 ,irrigation amount at joint-ing and heading stage 909 .7~963 .0 m3·hm-2 .Collectively ,these combined measures can achieve the target yield of spring wheat over 7 500 kg·hm-2 and water use efficiency above 1 .6 kg·m-3 .关键词
春小麦/农艺措施/河套灌区/节水高产Key words
spring wheat/agronomic measures/hetao irrigation district/water-saving and high-yielding分类
农业科技引用本文复制引用
李晓娟,关雯雯,张永平,王立雪..河套灌区春小麦节水高产农艺措施优化[J].干旱地区农业研究,2015,(4):134-140,7.基金项目
农业部公益性行业（农业）科研专项（200903007）；国家“十二五”科技支撑计划重点项目 （）
