河南农业科学2011，Vol.40Issue(2)：45-49,5.
不同播期、播种密度及其互作对小麦产量的影响
Effects of Sowing Date, Density and Their Combination on Yield of Wheat
摘要
Abstract
Under the field experiment conditions, effects of different sowing date and density and their combinations on leaf area index and grain yield were studied using a typical semi-winter cultivar Yumai 49- 198 and a typical weak-spring cultivar Yanzhan 4110 as test materials. The results showed that the leaf area index of Yumai 49 - 198 was significantly increased as appropriate increase of sowing amount on the case of delayed sowing. The yield of Yumai 49 - 198 was increased by 20.73％ when sowed on October 5 and by 13.22％ with sowing density of 2.7 million per ha. As to Yanzhan 4110, the increase of leaf area index was not obvious as appropriate increase of sowing amount on the case of delayed sowing. The yield of Yanzhan 4110 was increased by 7.01％ when sowed on October 19 and by 13.93％ with sowing density of 1.5 million per ha.Analysis of the interaction of sowing date and density showed that a higher yield would be gotten when sowed on October 5 with density of 1.95 million for Yumai 49 - 198 and when sowed on October 19 with density of 2.25 million for Yanzhan 4110. Therefore, an appropriate choice of sowing date and density should be made according to the characteristics of winter and spring wheat to obtain a higher yield in actual agricultural production.关键词
播期/播种密度/冬小麦/籽粒产量Key words
Sowing date/ Density/ Winter wheat/ Grain yield分类
农业科技引用本文复制引用
田文仲,温红霞,高海涛,杨洪强,余四平,段国辉,张少澜..不同播期、播种密度及其互作对小麦产量的影响[J].河南农业科学,2011,40(2):45-49,5.基金项目
河南省重大科技专项(081100110500) （081100110500）
国家"863"计划子课题(2006AA100201) （2006AA100201）
