低塘区位于姚北平原,属半稻半棉区。由于粮棉套种,前期棉花荫蔽时间长,秋季阴雨天多,如果施肥不当,往往会引起棉花徒长贪青迟熟,影响开铃吐絮,以致影响棉花的稳产高产和春粮的播种季节,此种情况,在地下水位高的稻棉轮作田尤为突出。为了探索促使棉花早熟的途径,我们进行了乙烯利催熟试验。 Low Tong District is located in the northern part of Yao, is half a half paddy area. Due to the intercropping of grain and cotton, the long period of shade of the cotton in the early stage and the cloudy and rainy days in autumn can lead to late blooming and late ripening of cotton, which will affect the boll opening and boll opening of cotton and thus affect the stable and high yield of cotton and the sowing season of spring grain In particular, rice paddy fields with high groundwater tables are particularly prominent. In order to explore ways to promote cotton premature, we conducted ethephon ripening test.