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通过不同的受旱处理,确定了棉花的水分敏感指数累积函数,棉花的时段水分敏感指数值较大的时期在播种后的90~110 d之间,可达到0.025以上。结果表明用生长曲线拟合的敏感指数累积函数能较好地描述运城棉花产量对水分的反应。“,”Through different water deficit treatments,the cumulative function of water sensitive index for cotton was established in this paper.The higher water sensitive index was in the period of 90-110 day after seeding and can reach 0.025.The results demonstrate