| 山东生态条件下纯作春棉的适宜密度研究 |
| |
| 引用本文： | 赵洪亮,于谦林,卢合全,董合忠.山东生态条件下纯作春棉的适宜密度研究[J].山东农业科学,2010(12):18-21. |
| |
| 作者姓名： | 赵洪亮 于谦林 卢合全 董合忠 |
| |
| 作者单位： | 山东省棉花生产技术指导站;山东棉花研究中心; |
| |
| 基金项目： | 公益性行业(农业)科研专项，山东省重大应用技术研究项目，现代农业产业技术体系建设专项资金资助项目 |
| |
| 摘 要： | 以常规抗虫棉鲁棉研28号为材料,在山东广饶、夏津和冠县三地大田条件下纯作种植,研究了不同密度（3.00～9.00株/m2）下的棉花产量及产量构成。结果表明,种植密度对纯作抗虫棉产量、产量构成以及熟相均有显著的影响,对经济产量的调控效应三个试验点大致相同,都随密度的增加呈现先升后降的趋势。即低密度（3.00株/m2）和高密度（9.00株/m2）处理的产量低,中高密度（4.50～7.50株/m2）的产量较高。三个点平均,6.00株/m2密度处理的籽棉和皮棉产量与4.50株/m2处理相当,但比3.00株/m2分别增产10.1%和12.0%,比9.00株/m2处理分别增产22.3%和22.8%。提高密度能提高单位面积的生物产量和单位面积铃数,但可显著降低棉柴比、铃重和早熟性。密度偏高和偏低都不能获得较高的经济产量和协调的产量结构,山东春棉纯作条件下适宜种植密度为4.50～6.00株/m2。
|
| 关 键 词： | 抗虫棉 纯作 种植密度 产量 早熟性 经济系数 |
Optimal Plant Density of Spring Cotton under Monoculture in Shandong Ecological Conditions |
| |
| ZHAO Hong-liang,YU Qian-lin,LU He-quan,DONG He-zhong.Optimal Plant Density of Spring Cotton under Monoculture in Shandong Ecological Conditions[J].Shandong Agricultural Sciences,2010(12):18-21. |
| |
| Authors: | ZHAO Hong-liang YU Qian-lin LU He-quan DONG He-zhong |
| |
| Institution: | ZHAO Hong-liang1,YU Qian-lin1,LU He-quan2,DONG He-zhong2 (1.Technical Guidance Station for Cotton Production of Shandong Province,Jinan 250013,2.Shandong Cotton Research Center,Jinan 250100,China) |
| |
| Abstract: | Cotton cultivar SCRC 28 was grown in Guangrao,Xiajin and Guanxian Counties of Shandong Province in 2009,and the cotton yield,yield components,earliness and economic index were studied under different plant densities.The results showed plant density had significant influence on cotton yield,yield components and maturity.The plants produced less cotton at the densities of 3.00 and 9.00 plants per square meter,but produced more at the densities of 4.50～7.50 plants per square meter.The average yields of seed cotton and lint at 6.00 plants per square meter were similar to those at 4.50 plants per square meter,but they were 10.1% and 12.0%,22.3% and 22.8% higher than those at 3.00 and 9.00 plants per square meter respectively.Increasing plant density significantly increased the biomass and boll numbers of per unit area,but decreased the ratio of seed cotton to stalk,boll weight and earliness significantly.It was concluded that higher economic yield and harmonious yield components could not be obtained at higher and lower plant densities,and the optimal plant density was 4.50～6.00 plants per square meter for spring cotton under monoculture in Shandong Province. |
| |
| Keywords: | Bt cotton Monoculture Plant density Yield Earliness Economic index |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
