| 沿江棉区杂交抗虫棉高产优质种植密度研究 |
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| 引用本文： | 徐道青,郑曙峰,王维,屈磊.沿江棉区杂交抗虫棉高产优质种植密度研究[J].安徽农业科学,2010,38(27):14886-14887,14925. |
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| 作者姓名： | 徐道青 郑曙峰 王维 屈磊 |
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| 作者单位： | 安徽省农业科学院棉花研究所,国家棉花改良中心安庆分中心,安徽安庆246003;安徽省农业科学院棉花研究所,国家棉花改良中心安庆分中心,安徽安庆246003;安徽省农业科学院棉花研究所,国家棉花改良中心安庆分中心,安徽安庆246003;安徽省农业科学院棉花研究所,国家棉花改良中心安庆分中心,安徽安庆246003 |
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| 基金项目： | 公益性行业(农业)科研专项，农业部农业结构调整重大科技研究专项 |
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| 摘 要： | 目的]研究在不同种植密度下棉花生长状况、棉铃特征和产量变化,为沿江棉区找寻高产优质的合理种植密度提供理论参考。方法]以湘杂棉8号为试验材料,起始密度为12000株/hm2,密度梯度为9000株/hm2,共设6个处理。研究其生长周期、产量、棉铃、棉纤维等特征变化。结果]密度对棉花的株高和其各生长周期影响不大,不同密度处理中籽棉衣分、纤维品质差异不明显,但对单铃重、＂三桃＂分布、蕾铃脱落率、僵烂比及产量等均有较大影响,且差异显著。基本规律为：棉花单铃重和伏桃比随着种植密度增加而降低,脱落率和僵烂比随着密度增加而增加;但都在处理5时表现最差。皮棉产量以处理2、3和4较高,最高的为处理3,密度最低的处理1产量最低。结论]通过试验数据分析,在沿江棉区种植杂交抗虫棉以30000株/hm2的种植密度最佳。
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| 关 键 词： | 杂交抗虫棉 密度 产量 纤维 |
Optimum Planting Density of Hybrid Insect-Resistant Cotton in Cotton Areas along the Yangtze River for High Yield and Quality |
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| Institution: | XU Dao-qing et al(Cotton Research Institute,Anhui Academy of Agricultural Sciences,and Anqing sub-center of the National Cotton Improvement Center,Anqing,Anhui 246003) |
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| Abstract: | Objective] To observe cotton growth,cotton boll and production at different planting densities and to provide a theoretical reference for reasonable planting density and high-quality high yield cotton along the Yangtze River.Method] The cotton variety Xiangzamian 8 was used,and its initial density was 12 000 plants/hm2.Density gradient was 9 000 plants/hm2 to set up six treatments.The growth cycle,yield,cotton boll,and characteristics of cotton fiber were observed.Result] Density did not have significant effect on plant height and growth cycle of cotton.Seed cotton lint percentage and fiber quality were not significantly different between treatments of different densities.However,boll weight,distribution of three-boll,boll abscission rate,stiff and rot boll,and yield were affected significantly.The boll weight and bolls of July 21 decreased with the increase of planting density.The boll abscission rate and percentage of stiff and rot boll increased with the increase of planting density.In addition,the treatment 5 was the worst.The lint yield was highest in the treatment 3 and lowest in the treatment 1,and it was higher in the treatment 2,3 and 4.Conclusion] The optimum planting density of hybrid insect-resistant cotton is 30 000 plants/hm2 in cotton areas along the Yangtze River. |
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| Keywords: | Hybrid insect-resistant cotton Density Yield Fiber |
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