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2008、2009年分别用南农2191和科棉6号进行田间试验,研究抗虫杂交棉地膜精播稀植技术及优化整枝技术的产量构成和形成特点。结果表明,利用“双秆棉”技术克服抗虫杂交棉地膜精播稀植技术的不足,进一步提高其产量和品质是完全可行的,具体操作和技术措施有待进一步深入研究;适当保留2个左右营养枝有利于增加结铃数,处理得当可以增产;不整枝处理在低密度和气候条件较好时结铃数增加,有一定的增产效果,但在密度较高时和雨涝年份成铃数降低,影响产量。因此,抗虫杂交棉地膜精播稀植技术应强调合理整枝。
In 2008 and 2009, field experiments were conducted with Nannong 2191 and Kemian 6 respectively to study the thin-planting techniques of thin-film mulching on insect-resistant hybrid cotton and the yield components and formation characteristics of optimized pruning techniques. The results showed that using “double stalk cotton” technology to overcome the deficiency of anti-insect hybrid cotton seedling thinning planting technology and further increase its yield and quality is completely feasible, the specific operation and technical measures to be further studied; proper reservation 2 About the number of vegetative branches is conducive to increasing the number of bolls, properly handled can increase production; not pruning treatment at low density and climate conditions are better when the number of bolls increased, a certain yield increase effect, but at higher densities and rainfall year into The number of bells decreases, affecting output. Therefore, anti-insect hybrid cotton thin film precision planting technology should emphasize the rational pruning.