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研究了抗虫棉品系Ｒ９３－６皮棉产量为１０１７ｋｇ·ｈｍ－２的需肥规律，Ｒ９３－６生长前期棉株的干物质及养分积累量比相近产量的中棉所１６要少一些，开花后基本一致；吸收养分加速率峰值出现偏晚。因此，应重施基肥，以促进其前期生长。皮棉产量为１１０６ｋｇ·ｈｍ－２时，氮的最佳用量为１３９．５ｋｇ·ｈｍ－２。氮肥可全部做基肥施用
The rule of fertilizer requirement of resistant cotton line R93-6 was 1017kg · hm-2. The dry matter and nutrient accumulation of R93-6 pre-plant cotton plants were less than those of similar cotton plants. After flowering Basically the same; nutrient nutrient peak rate appeared late. Therefore, the base fertilizer should be re-applied to promote its pre-growth. When the lint yield was 1106kg · hm-2, the optimum nitrogen content was 139.5kg · hm-2. Nitrogen fertilizer can be used to do all the base