西藏林芝地区玉米地膜栽培产量性状分析

目的]研究地膜颜色与玉米产量的关系,为西藏地区玉米最佳栽培方式提供一些参考。方法]用黑、白2种颜色地膜栽培正红6号、正红211及川单15号3个玉米品种,对其产量性状进行主成分分析,探索不同颜色地膜对玉米不同品种产量的影响。结果]黑膜栽培玉米在产量性状上优于白膜栽培的玉米。黑膜栽培的玉米在整体上株高、穗长、穗直径等优于白膜栽培玉米。穗位性状协调,积累和制造营养的叶片多,叶面积大,光合作用制造和积累的产物多,产量高。但是黑膜栽培的玉米生育期比白膜栽培的长。在西藏林芝地区及相似气候地区应选育或引进株高适宜、大穗、大粒型及穗位适中的品种,避免结穗数多、籽粒小且第1穗高度较高的玉米品种。结论]在西藏地区,利用黑膜栽培饲料玉米可能会取得更好的经济效益。

Analysis of the Yield Character of the Corn Covered with Mulching Membrane in Linzhi Area of Tibet

Objective] The reference for the best cultivation model of corn in Tibet was provided through the study the relationship between colour of plastic film and its yield.Method] The yield character of the corn variety:,Zhenghong No.6,Zhenghong 211 and Chuandan No.15,which were covered with black or white mulching membrane,was evaluated with the method of principal component analysis for the application of better colorful plastic film.Result]The application of black plastic film could promote the corn yield-i...