论文部分内容阅读
在大田条件下研究了密度、氮肥施用时间、缩节安化控三因素配合对麦套短季棉霜前花率和皮棉产量的影响。结果表明，合理密植、早施氮肥、全程化控三因素的紧密配合是夏棉优质高产的关键。其最佳组合是密度９万～１２万株／公顷，每公顷基施纯氮７５～９０ｋｇ，蕾期、初花期和盛花期各施缩节安１５ｇ、３０ｇ和４５ｇ化控。
Under field conditions, the effects of density, application time of nitrogen fertilizer and shrinkage control on the flower yield and lint yield of cotton short-season before frost were studied. The results showed that the close coordination of three factors, including rational and close planting, early application of nitrogen fertilizer and full control of chemical fertilizer, was the key to high-quality and high-yielding summer cotton. The best combination is the density of 90,000 to 120,000 plants / hectare, 75 to 90 kg pure nitrogen per hectare-based facilities, buds, early flowering and flowering Shi Shi Jian 15g, 30g and 45g of chemical control.