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目前繁殖大白菜生产用种的主要方法是利用冬季阳畦育苗,春季定植,夏季采收种子。其中阳畦育苗是很关键的一个环节,在很多细节性的问题上稍有不慎就会导致制种产量的下降,甚至使整个制种工作失败。总结多年的制种经验,我认为应注意以下几点: 1 建造阳畦。挖床坑时要南深北浅中间凸起。两头要比中间深,这样有利于保持整个床温的一致性。否则,将来畦两头和南部边缘苗少,长的苗子也小,春季定植时,其它苗已长大,而这些地方的幼苗因
At present, the main method of breeding Chinese cabbage production is the use of winter Yang Zi nursery, planting in spring and summer harvest of seeds. Among them, Yangba seedling cultivation is a crucial link, and the slightest mistake on many details will result in the decrease of seed production and even the failure of the whole seed production. Summarized many years of seed production experience, I think we should note the following: 1 Yang building construction. When digging a bed pit to the south of the north shallow raised in the middle. The two ends should be deeper than the middle, which is conducive to maintaining the consistency of the entire bed temperature. Otherwise, in the future, there will be few seedlings on the fringes of the south edge and small seedlings on the southern fringes. When planting in spring, other seedlings have grown up,