不同播量对郑麦7698群体结构和产量性状的影响  

Effects of Regulation and Control of the Planting Denisty on the Population Structure and Yield of Zhengmai 7698

作　　者：刘毓侠[1] 田伟[2] 刘艳侠[2] 

机构地区：[1]河南省农业科学院,河南郑州450002 [2]商丘职业技术学院,河南商丘476100

出　　处：《山西农业科学》2014年第12期1283-1285,共3页Journal of Shanxi Agricultural Sciences

基　　金：河南省科技攻关计划项目(0424020024)

摘　　要：为了给生产上大面积推广的郑麦7698提供适宜种植密度,研究了不同播量对郑麦7698群体结构及产量的影响。结果表明,随着播量的增加,郑麦7698各处理总茎数及穗数呈现增加的趋势（P〈0.01）;播量与穗数呈对数曲线关系（y=536.4＋80lnx）;低播量条件下,增加播量增产显著,高播量条件下,增加播量增产不显著,播量与产量呈对数曲线关系（y=9 210.8＋782.4lnx）。播量对产量三要素的影响效应表现为穗数〉穗粒数〉粒质量;增加播量可有效增加穗数,但穗粒数、粒质量随之下降,高产栽培必须协调好产量构成因素之间的关系。郑麦7698属半冬性耐密植品种,适宜播量是该品种发挥高产潜力的关键。豫东潮土区10月10日播种的郑麦7698适宜播量为187.5~225.0 kg/hm2。To provide the suitable planting density for the Zhengmai 7698 which was going to be promoted in large area, the article analysed the effect of different planting denisty on the group and the yield according to the Zhengmai 7698. The results showed that with the increase of planting denisty, the total number of stems and the mature panicles increased during the whole growth of Zhengmai 7698,and the differences were significant. There was a logarithmic curve relationship between the planting denisty and the spike, and the regression model was y=536.4＋80lnx. If the denisty was increased, the yield was increased significantly in the low denisty conditions,and the yield was increased slightly under the high denisty conditons. There was a logarithmic curve relationship between the planting denisty and the yield, and the regression model was y=9 210.8＋782.4lnx. The impact of the planting denisty on the three elements of the yield should be： the spike numberthe grain numberthe grain weight. If the denisty was increased, the spike number was increaed effectively, but the grain number and the grain weight were decreased. Each element of the yied should be coordinated in the high-yield cutivation. The Zhengmai 7698 was a semi-winter variety and resistant to the close planting, and the suitable planting density was important for its high-yield potential. In this trial, the suitable planting density of Zhengmai 7698 in the alluvial soil in the east of Henan province was from 187.5 kg/hm2 to 225.0 kg/hm2.

关 键 词：郑麦7698 播量 产量 产量结构 

分 类 号：S512.11[农业科学—作物学]