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以棉花常规整枝株型为对照 ,对开心株型成铃规律、叶面积扩展进程、干物质积累量及根系发育状况进行分析。结果表明 :开心株型单株成铃高峰与铃重高峰相吻合 ,主茎果枝结铃高峰处在 7月 2 0 - 2 5日 ,4个叶枝结铃高峰集中在 8月 1 0 - 1 5日 ,单株平均铃重比常规株型提高 1 1 .4% ,单株结铃多 2 4.6 % ,8月 1 5日前开花成铃占 88% ;与对照田相比 ,开心株型棉田光强分布株间提高 2 1 .4% ,行间提高 38% ,单株功能叶片 75片 ,群体有效叶片增加 30 % ,叶面积系数最大值 3.5 2的日期 ,正值叶枝结铃高峰 ,源库关系协调 ,光合效率提高 2 9.1 % ;干物质生产量 1 2 6 2 7.0～ 1 4 76 1 .5kg·hm-2 ,为常规株型的 6 .9%～ 2 0 .1 % ,生殖体干物重增加 30 .9%～ 37.0 % ;根系伤流量为常规株型的 1 .5 0倍 ,根干重为常规株型的 1 .39倍。开心株型发挥叶枝成铃主导作用 ,开辟棉花高产新途径
The conventional cotton boll type was used as a control to analyze the regular pattern of bolls, leaf area expansion, dry matter accumulation and root development. The results showed that the boll height of happy plants was consistent with the boll weight peak, the boll height of main branch was between July 20 and August 25, and the peak of four branches was concentrated between August 10 and August 15 The average boll weight per plant was 11.4% higher than that of the conventional plant type. The boll number per plant was 26.6% more than that of the conventional plant type, and it was 88% Strong distribution of strains increased by 21.4%, increased 38% between rows, functional leaves per plant 75, the effective leaf population increased by 30%, the maximum leaf area coefficient 3.52 date, is the peak value of leaf knot bell, the source library The relationship between coordination and photosynthetic efficiency increased by 21.9%; dry matter production of 1 2 6 2 7.0 ~ 1 4 76 1 .5kg · hm-2, conventional plant type of 6.9% ~ 20.1%, germ dry matter Weight increase of 30.9% -37.0%. The root trauma volume was 1.5 times that of the conventional plant type, and the root dry weight was 1.39 times of the conventional plant type. Happy plant type play a leading role in the branch bell, open up new ways for cotton yield