棉花选种的方法
文献类型: 中文期刊
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期刊名称:中国农业科学
ISSN: 0578-1752
年卷期: 1958 年 09 期
页码: 493
摘要: 棉花选种,要求做到"五选"与"四分"。"五选"就是块选、株选、铃选、办选及粒选等。1.块选(片选):未建立种子地的农业社,今秋可选择生长健壮,产量高及纯度大的棉田,做为选种地用。山西翼城先锋社就是在水地、肥地、亩产在500斤以上的棉田上选种,因为这些地所产生的种子,子粒饱满,发芽快,产量也高。如苏联伏罗希洛夫农庄及其他各处试验,同是108夫棉种,在丰产地上采收的种子,比从加工厂买来的种子能增产12%以上。所以说选种要在丰产地段上进行.
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