【摘要】 2008—2010年在山西省运城市设置了不同地力水平、不同气候年型条件下的棉花群体密度试验.结果表明,高水肥棉田适宜密度为5.1万株.hm-2,中水肥棉田为6.9万株.hm-2,低水肥棉田或盐碱滩地、扩浇水地为8.7万株.hm-2.密度低于3.0万株.hm-2或高于10.5万株.hm-2存在较大的减产风险.更多还原

【Abstract】 The experiments were conducted to study the effects of plant density,different soil fertility levels and climate on cotton yield in Southern Shanxi Province from 2008 to 2010.The results showed optimum plant densities were 51 000 plants/hm2 for high soil fertility and better irrigation,69 000 plants/hm2 for medium soil fertility and 87 000 plants/hm2 for lower soil fertility and saline-alkali soil respectively.There were higher risk to reduce cotton yield for plant density below 30 000 plants/hm2 or more than 10 500 plants/hm2更多还原