| 黄顶菊对棉花生长及产量的影响 |
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| 引用本文： | 王贵启,许贤,王建平,李少青,吕远,倪汉文.黄顶菊对棉花生长及产量的影响[J].植物保护,2011,37(3):84-86. |
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| 作者姓名： | 王贵启 许贤 王建平 李少青 吕远 倪汉文 |
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| 作者单位： | 1. 河北省农林科学院粮油作物研究所,石家庄,050031
2. 中国农业大学,北京,100193 |
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| 基金项目： | 公益性行业(农业)科技专项 |
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| 摘 要： | ［目的］ 明确黄顶菊对棉花生长及产量的影响。［方法］ 在田间条件下，研究不同密度黄顶菊对棉花出苗、生长及产量的影响。 ［结果］ 黄顶菊发生密度在40株/m2下，对棉花出苗和苗期生长没有影响，但对棉花中、后期生长有严重抑制作用，导致棉花株高低、茎秆细、现蕾晚、蕾铃少，部分植株死亡。黄顶菊对棉花产量影响比较大，在1~40株/m2下，棉花产量损失32%~95%。棉花产量损失(YL)与黄顶菊发生密度(Dw)之间的函数关系为YL=66.230 4Dw/(1+66.230 4Dw/100)，R=0.977 9。［结论］ 黄顶菊对棉花中后期生长及产量有明显影响。
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| 关 键 词： | 黄顶菊 棉花 生长 产量 |
Effects of different density of Flaveria bidentis on the growth and yield of cotton |
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| Wang Guiqi,Xu Xian,Wang Jianping,Li Shaoqing,Lü Yuan,Ni Hanwen.Effects of different density of Flaveria bidentis on the growth and yield of cotton[J].Plant Protection,2011,37(3):84-86. |
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| Authors: | Wang Guiqi Xu Xian Wang Jianping Li Shaoqing Lü Yuan Ni Hanwen |
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| Institution: | 1. Institute of Food and Oil Crops, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang050031, China; 2. China Agricultural University, Beijing100193, China |
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| Abstract: | Objective] The effects of Flaveria bidentis on the growth and yield of cotton were evaluated.Method] Field experiments were conducted to determine the effects of Flaveria bidentis at different densities on the germination,growth and yield of cotton.Result] F.bidentis under 40 plants/m2 had no effects on germination and growth of cotton at the early stage,but severely inhibited the growth of cotton at the middle and late stages.The weed infestation severely reduced cotton yield.The yield loss of cotton ra... |
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| Keywords: | Flaveria bidentis cotton growth yield |
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