一是晚秋桃的棉籽。因为伏桃种子的健籽率高,发芽率在85％以上,苗势壮、发育早,而晚秋桃开花后形成棉籽的时间短,发芽率只在50％以下,甚至更低。 二是喷施了乙烯利的棉籽。乙烯利喷施棉花后,能调节棉花的生长发育和代谢功能,能使棉铃提早释放乙烯,促其吐絮早熟。但由于释放乙烯后,棉花及棉籽内 First, late autumn peach cottonseed. Because of the high seed-setting rate of seeds, the germination rate is more than 85%. The seedlings have strong growth and early development. However, the time for forming cottonseed after flowering in late autumn is short, and the germination rate is only below 50% or even lower. Second, ethephon sprayed cottonseed. Ethephon spraying cotton, cotton can regulate the growth and metabolism and metabolism, can make bolls early release of ethylene, and promote boll interception premature. However, due to the release of ethylene, cotton and cottonseed inside