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一,选地隔离1、选地：在制种田的选择上，要选择肥力条件中上等，浇水方便，水源条件好，无芦苇，易集中的田块。2、隔离方法：常用的隔离方法有三种。1）、空间隔离：要求在制种田四周400米内不许种植其它玉米。2）、屏障隔离：林带要求50米以上，高秆作物保证制种田四周50米
First, the selection of isolation 1, the election: the choice of farming system, to choose the best fertility conditions, watering convenience, good water conditions, no reeds, easy to concentrate the plots. 2, isolation methods: There are three commonly used isolation methods. 1) Spatial Isolation: It is required that no other corn should be planted within 400 meters of farming. 2), barrier isolation: forest belt requirements of more than 50 meters, high-stalk crop guarantee system around 50 meters