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棉花开心株型栽培,以叶枝结铃为主,皮棉产量达到1875~2250kg/hm2。其单铃重的时间变化特点,呈现两个高峰期,第一铃重高峰期在7月16~25日,第二铃重高峰期为8月6~15日,两个高峰期内所结棉铃的平均铃重分别比整株单铃重高18.8%和12.7%;主茎4个果枝开花成铃高峰,处在第一铃重高峰期,4个叶枝开花结铃高峰集中在第二铃重高峰,整株棉花在8月15日前开花的果节数达88%以上,在稀植(3.75万株/hm2)条件下,内围果节比重增大,1~2果节占果节的80%以上,实现棉花在最佳结铃时间和空间多结优质铃。其株型调控关键技术是,宽垄稀植,留叶枝,早摘心。
Cotton plant type happy to branch leaf bell, lint yield reached 1875 ~ 2250kg / hm2. The characteristics of time variation of single boll weight showed two peaks, the first bell weight peak in July 16 ~ 25, the second bell weight peak in August 6 ~ 15, the two peaks during the period The average boll weight of cotton bolls was 18.8% and 12.7% higher than that of the whole bolls. Four fruit branches of main stems flowed to the peak of boll blossom, peaked at the first boll weight and the peak of flowering boll of four branches In the second boll weight peak, the whole plant flowering date before August 15 reached more than 88%. Under the condition of sparse planting (3.75 million plants / hm2), the proportion of the internodes increased, 2 fruit section accounts for more than 80% of fruit section, cotton in the best time to achieve the bell and space more knot quality bell. The plant-type regulation and control of key technologies is wide ridge sparse planting leaves leaves branches, early topping.