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在夏棉春育加麦后地膜覆盖栽培措施的基础上， 研究夏棉不同密度与复硝钠、化肥施用量次的函数关系， 经方程分析寻优获得， 子棉产量≥４５００ｋｇ·ｈｍ － ２优化方案为： 密度１０１７７５～９０９９０ 株， 复硝钠９～５ 次，化肥８４７．５～６３９．０ｋｇ。
On the basis of the plastic film mulching cultivation measures after spring cotton and plastic film mulching, the function relationship between different density of summer cotton and the dosage of sodium nitrite and chemical fertilizer was studied and the optimum yield was obtained through the equation analysis. The yield of cotton was ≥4500kg · hm - 2 The optimized scheme was: density 101775 ~ 90990, sodium nitrate 9 ~ 5 times, fertilizer 847.5 ~ 639.0kg.