[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.%[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 com 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 - increasing more than that of white one and the height of plant, the length and diameter of ear of corn under the condition of application of black plastic film was better those of white one. And also, under the condition of application of black plastic film, the corn plant was with good coordination in ear character, many more leaves, which large was larger and photosynthesis was stronger, was with the ability in the accumulation and production of nutrient, so the corn yield was higher. However, the period of com growth under the condition of application of black plastic film was longer than that of white. In the Linzhi area of Tibet and other similar climatic areas, the corn variety with favorable height of plant, large ear and grain, and moderate position of ear leaf, but multiple - ear, small grain and higher position of the first era leaf.should be selected or introduced. [ Conclusion] In Tibet, it was possible that the better economical efficiency from the corn production as feed was under the condition of application of black plastic film.
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