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试验结果表明 ,里下河棉区大麦后移栽棉每公顷产 1 875kg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∶ P2 O5∶ K2 O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(>2 62 .5kg· hm-2 ) ,单株成铃数、铃重及产量随施钾水平的提高而增加
The results showed that the suitable transplanting cotton yield was 1,875 kg lint per hectare after transplanting of barley in Lixiahe area, the suitable density was about 45,000, the best fertilization (pure nitrogen) level was 337.5kg, N: P2 O5: K2 O was 1 : 0 .4: 0 .8, fertilization level, fertilizer ratio and density on the number of fruit branches per plant a greater impact, the number of fruiting branches per unit area, the total amount of how much depends on the density of the size. Under the condition of higher N application (> 2 62.5 kg · hm-2), bolls per plant, boll weight and yield increased with the increase of potassium application