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在棉花高密度栽培调控中 ,因受密度、品种、揭膜、浇水等因素的影响 ,常常出现施用缩节安 ( DPC)化控方法不当、用量不准、化控时间安排不妥等现象 ,造成棉花出现不同程度的疯长或早衰。为此提出了在棉花整个生长期中 ,采用叶龄模式加红茎比 ,对棉花进行量化指标的调控措施 ,在四个关键时期进行实施 ,做到了化调指标数量化 ,因苗诊断灵活化 ,使高密度棉花前期坐果低 ,中期棵间生长稳 ,后期透光好 ,不疯长不早衰 ,简化人工整枝 ,提高了棉花品质 ,增产增效显著。
In the cotton high-density cultivation and control, due to the density, variety, uncovering, watering and other factors, often appear to use Dian Dian (DPC) chemical control method is inappropriate, the amount is not allowed, , Causing cotton to varying degrees of soaring or premature aging. In this paper, we put forward the measures of controlling the quantitative index of cotton in the whole growth period of cotton by using the leaf-age model plus the stem-to-stem ratio and implementing it in four key periods to achieve the quantification of chemical indicators, , So that high-density cotton early low fruit set, the inter-stable growth of trees, the late light is good, not too long and not premature, simplifying artificial pruning, improve the cotton quality, increase yield and efficiency significantly.