正确采取繁殖和制种措施是保证种子质量和数量的基础。在多年繁制过程中,由于多种因素的影响,经常造成不必要的损失,应引起我们足够重视。1 要选好地、隔离要保证繁制地的选择非常重要,必须选肥力均匀、旱涝保收的地块,而且不能重茬,还要连片种植,这样有利于相互传粉,提高结实率。制种田空间隔离300m 以上,繁殖田要 Correct adoption of breeding and seed production measures is the basis for ensuring the quality and quantity of seeds. In the course of many years of complicated reproduction, due to the influence of many factors, frequent unnecessary losses should be given enough attention by us. 1 To choose well, it is very important to ensure the selection of plots to be isolated. It is necessary to choose plots with even fertility, drought and flood protection, and can not be re-stubbled, but also contiguous planted, which is good for mutual pollination and seed setting. System of farming more than 300m isolation, breeding fields to