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在目前的栽培条件下,上海地区的棉花生产,每年总有不少面积的棉田要靠秋桃和晚秋桃“当家”,棉花的采收结束期往往延续得很晚,特别是不少的晚秋桃不能正常吐絮,影响了棉花的产量和品质。同时,棉花的迟熟晚收,还影响到后茬作物的及时播种和正常生育。因此,促使棉花早熟,对夺取粮棉双高产都具有重要意义。近年来,不少单位应用“乙烯利”进行了棉花催熟试验,认为对棉铃的催熟效果良好,具有一定的实用价值。我们根据上海郊区的气候条件和栽培特点,重点研究不同铃
Under the current cultivation conditions, the cotton production in Shanghai requires a lot of area of cotton fields each year to rely on autumn peach and late autumn peach “Dangs”, the end of the harvest period of cotton often continues very late, especially a lot of late autumn Peach can not be normal bolting, affecting the yield and quality of cotton. At the same time, late harvest of cotton late, but also affect the timely crop after sowing and normal fertility. Therefore, to promote cotton precocity, to seize the high yield of grain and cotton are of great significance. In recent years, many units of “ethephon” conducted cotton ripening test, that cotton boll ripening effect is good, has a certain practical value. Based on the climatic conditions and cultivation characteristics of Shanghai’s suburbs, we focus on different bell types