旱地全膜双垄沟播栽培条件下玉米穗部性状的数量关系研究  

Study on ear characters of corn in film mulching on dulble-ridge plus furrow in dryland

作　　者：赵凡[1] 金胜利[1] 张光全[1] 火玉洁 李桃[1] 汉小红 

机构地区：[1]甘肃省榆中县农业技术推广中心,甘肃榆中730100

出　　处：《干旱地区农业研究》2011年第6期79-85,96,共8页Agricultural Research in the Arid Areas

基　　金：农业部"旱作节水农业财政专项"〔农财发(2003)11号〕

摘　　要：对在旱地全膜双垄沟播栽培条件下的47个玉米杂交种的穗部性状与单株产量及穗部性状之间的关系进行了相关和灰色关联度分析，并对灰色关联度高且相关系数显著者进行了多类型回归曲线拟合，并通过分析曲线方程的函数性质，明确了在该技术模式下，玉米穗部性状对产量的影响程度以及数量特征和关键点。提出了在纯早地全膜双垄沟播栽培条件下高产玉米杂交种所具有的穗部性状为出籽率高，千粒重适中，穗粒数较多，秃顶短的小籽粒中等穗型的品种。即协调的性状指标为出籽率在78％以上，千粒重250g左右，穗粒数560～580粒，穗粗5em左右，穗行数18—20行，秃顶低于1．4em的品种为宜。用相应参数和曲线图来定量描述各相关性状之间以及与产量的关系更加精确和直观，也能找出有生物学意义的关键点位置。Analysis was made of correlation and grey incidence order between ear characters and yield per plant of 47 hyprid corn varieties in film mulching on dulble-ridge plus furrow in dryland, and regression curve fitting was also made of those with high grey correlation degree and significant correlation coefficients, so as to find out the degree of influence of ear characters on corn yield. The results showed that, in this kind of cultivation mode, the high-yielding hybrid corn had such ear characters as high, moderate 1000-grain weight, large number of grains per ear, short baldhead, small grain size and moderate ear size. The suitable coordinated indices of ear characters were 78 % fertility, 250 g of 1000-grain weight, 560 - 580 grains per ear, 5cm of ear diameter, 18 - 20 rows of grains per ear and less than 1.4 cm of baldhead. It is very accurate and visual to describe quantitatively the correlation between different indicators of ear characters and their relationship with corn yield with corresponding parameters and curves, meanwhile the biological key points can also be found in this way.

关 键 词：全膜双垄沟播 玉米 穗部性状 产量 回归函数 灰色关联分析 旱地 

分 类 号：S513.31[农业科学—作物学]