西南玉米生态区域划分及品种需求

Ecological regions and variety requirements of the southwest corn

西南玉米生态区包括四川、重庆、云南、贵州全部,广西大部,陕西南部,湖南和湖北西部的丘陵地区,以及甘肃省南部的部分地区,2013年播种面积为9083.8万亩,为全国玉米主产区之一。按玉米种植地区的热、水、土等农业自然状况,适当考虑行政区划和国家玉米区试点的布局,西南玉米生态区划分为5个大区,22个亚区。本文根据各个亚区的地形地貌、生态特点及种植情况等特点,确定各自对玉米品种类型的不同需求。

Ecological regions of the southwest corn include all of Sichuan, Chongqing, Yunnan and Guizhou, most parts of Guangxi, south of Shanxi, hilly regions of the west of both Hunan and Hubei, and part of south Gansu province. Plant-ing area in 2013 was 90,838 million acres, which was one of the main corn producing areas of the country. According to the heat, water, soil, and other agricultural natural conditions of corn planting areas, giving due consideration to the ad-ministrative divisions and the layout of the national maize pilot districts, ecological regions of the southwest corn are divid-ed into five regions and 22 subregions. In this article, recommendations are provided on the types of maze varieties suit-able for planting in each subregion, based on the topography, ecological characteristics and cultivation practice and so on.