秋繁地豇豆种子生长发育处在前期高温高湿、后期低温阴雨环境下，产量低而不稳，保纯难度大。笔者经过几年的试验研究，总结出一套保纯高产繁种技术，现简介如下：１　选地隔离选择两年以上未种过豆类作物、土质肥沃疏松、排灌方便的田块。隔离方法有空间隔离，即与其它豆类作 Autumn and summer cowpea seed growth and development in the early high temperature and humidity, the late low temperature rainy environment, the output is low and unstable, Paul Pure difficult. The author after several years of experimental study, summed up a set of pure high-yielding breeding technology, are summarized as follows: 1 choose to choose more than two years to choose not seeding legumes, loose soil fertility, irrigation and drainage convenient plots. Isolation methods are space-isolated, that is made with other beans