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

作　　者：田文仲 温红霞 高海涛 杨洪强 余四平 段国辉 张少澜 

机构地区：[1]洛阳市农业科学研究院,河南洛阳471023

出　　处：《河南农业科学》2011年第2期45-49,共5页Journal of Henan Agricultural Sciences

基　　金：河南省重大科技专项(081100110500);国家"863"计划子课题(2006AA100201)

摘　　要：在大田条件下,选用典型半冬性小麦品种豫麦49-198和典型弱春性品种偃展4110为试验材料,研究了不同播种时期和播种密度及其交互作用对冬小麦叶面积指数和籽粒产量及产量构成因素的影响。结果表明,半冬性小麦品种豫麦49-198在推迟播期情况下,适当增大播量,可明显提高叶面积指数,10月5日播种产量提高幅度达20.73%,播种密度为270万株/hm2可使豫麦49-198产量提高13.22%;弱春性小麦品种偃展4110在推迟播期情况下,适当增大播量,叶面积指数提高不明显,10月19日播种产量可提高7.01%,150万株/hm2处理可使偃展4110产量提高13.93%。分析播期与播种密度的互作效应,豫麦49-198小麦品种10月5日播种,播种密度195万株/hm2可取得较高产量;偃展4110小麦品种10月19日播种,播种密度225万株/hm2亦可取得较高产量。因此,在生产中可根据小麦冬春品性选择适宜的播期和种植密度以获取较高的产量。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 

分 类 号：S512.1[农业科学—作物学]