里下河地区棉花超高产密肥优化调控研究
CHINA COTTON(2000)
Abstract
试验结果表明,里下河棉区大麦后移栽棉每公顷产1875kg皮棉,适宜的密度为4.5万株左右,最佳施肥(纯氮)水平337.5kg,N:P2O5:K2O为1:0.4:0.8,施肥水平、肥料配比及密度对单株果枝数影响较大,单位面积果枝数、总果节量的多少主要取决于密度大小.在施N水平较高的情况下(>262.5kg·hm-2),单株成铃数、铃重及产量随施钾水平的提高而增加.
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