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低塘是余姚县北部平原的一个半稻半棉区,耕作制度历来习惯于水旱轮栽,粮棉套种。棉花苗期荫蔽时间长,后期秋雨多,若施肥不当,往往引起部分棉田尤其是地下水位高的稻棉轮作田棉花植株高大,长势旺盛,贪青晚熟,影响棉铃开裂吐絮,以致影响棉花的产量、品质和冬季作物的播种季节。乙烯利是一种植物的成熟内源激素。它可以推动植物的各种生理过程,促使棉花停
Low Tong is a semi-paddy semi-paddy area in the northern plain of Yuyao County. The farming system has always been accustomed to round-robin planting, grain and cotton intercropping. Cotton seedling shaded a long time, late autumn and more, if improper fertilization, often lead to part of the cotton fields, especially high groundwater level cotton paddy field cotton plants tall, vigorous, late blooming, affecting cotton boll opening and cracking, which affects the yield of cotton , Quality and planting season of winter crops. Ethephon is a plant’s mature endogenous hormones. It can promote the plant’s various physiological processes, prompting the cotton to stop