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京引39号水稻品种是近年我区推广的优良品种。为了进一步发挥其增产作用,有必要对其主要生物学特性进行研究。在吴忠县古城大队党支部和贫下中农的支持下,1972年我们对该品种卷秧稻的幼穗分化进行了观察。观察田块属稻旱二段轮作田,前作小麦,麦后复种糜子,糜子收后进行秋耕、冬灌,春季平田、犁翻各两次,播种前亩施基肥苦豆子400斤、碳铵65斤、过磷酸钙50斤,4月23日
Beijing cited 39 rice varieties in recent years to promote the fine varieties in our region. In order to further enhance its production, it is necessary to study its main biological characteristics. With the support of the party branch of the ancient city of Wuzhong County and the poor poor peasants, we observed the panicle differentiation of this variety of rice seedlings in 1972. Observe the field block is paddy field two rounds of crop rotation, before wheat, wheat after replanted broomcorn, broomcorn millet harvest, winter irrigation, spring flat field, plow turned twice before sowing 400 acres of base fertilizer Sophora flavescens, ammonium bicarbonate 65 Kg, 50 kg of superphosphate, April 23