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当前位置: 首页 > 文章 > 打顶、化控与磷肥耦合对长绒棉产量结构、蕾铃形成及脱落的影响 新疆农业科学 2007,44 (2) 149-153
Position: Home > Articles > Effect of Topping,chem-Control and Phosphorus Fertilization on the Yield Components,Forming and Shedding of Buds and Bolls of Long Fiber Cotton Xinjiang Agricultural Sciences 2007,44 (2) 149-153

打顶、化控与磷肥耦合对长绒棉产量结构、蕾铃形成及脱落的影响

作  者：
梁智;周勃;钟新才;杨涛
单  位：
新疆农科院土肥所
关键词：
打顶;化控;磷肥;耦合;长绒棉
摘  要：
采用田间小区试验,首次系统地研究了打顶、化控、磷肥耦合对长绒棉产量构成、蕾铃形成及脱落的影响。结果表明,打顶、化控和磷肥对棉花产量表现出负耦合效应。打顶、化控和磷肥单独使用对长绒棉有增产作用,而它们配合使用表现出减产作用。低磷不化控情况下,打顶可使棉花蕾铃脱落率显著降低,从而使单株有效结铃数增加。低磷不打顶情况下,化控同样能降低长绒棉的蕾铃脱落率,但化控也降低了现蕾数,从而使其单株结铃数没有显著增加。在不打顶不化控情况下,增施磷肥可显著提高长绒棉的现蕾数,使单株结铃数提高。在化控或高磷情况下打顶都会使长绒棉的现蕾数明显下降,导致单株有效结铃数降低。
译  名：
Effect of Topping,chem-Control and Phosphorus Fertilization on the Yield Components,Forming and Shedding of Buds and Bolls of Long Fiber Cotton
作  者：
LIANG Zhi,ZHOU Bao,ZHONG Xin-cai,YANG Tao(Institute of Soil and Fertilizer,Xinjiang Academy of Agricultural Sciences,Urumqi 830091,China)
关键词：
topping;chem-controlling;phosphorus fertilization;coupling;long fiber cotton
摘  要：
Based on field experiments,effect of topping,chem-controlling and phosphorus fertilization on the yield components,forming and shedding of buds and bolls of long fiber cotton was studied.The main results were as follows: coupling effect of topping,chem-controlling and phosphorus fertilization on the boll weight,boll number and yield of cotton was negative.Only-using topping,chem-control and phosphorus fertilization increase the long fiber cotton yield,while cooperation-using them could decrease long fiber cotton yield.Since topping could decrease markedly shedding rates of cotton under low P level and non-chem-controlling condition,number of available cotton bolls was greatly increased.Under low P level and non-topping condition,chemical controlling decreased markedly the shedding rate,and decreased buds of cotton,thereby number of available cotton bolls was not increased markedly.When adding P fertilizer increased buds of cotton under non-topping and non-chem-controlling condition,number of available cotton bolls was thereby increased.Since topping decreased number of cotton buds under chem-controlling condition or high P level,number of available cotton bolls were thereby decreased.

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