论文部分内容阅读
棉花生产中经常出现大量蕾铃脱落,严重影响棉花产量和效益。造成蕾铃脱落的原因是多方面的,只有采取适当措施才可能有效减少落蕾落铃,提高产量和效益。一、影响蕾铃脱落的因素1、品种因素。在同等条件下,由于品种之间存在差异,蕾铃脱落的程度也不尽相同。首先,品种之间的现蕾多少、成铃性高低有很大差异;其次,盲蝽蟓、棉铃虫喜欢在多茸毛的棉花品种上产卵,且多茸毛品种使卵的附着力增加,不容易被风吹落和雨水冲掉,棉花因受害严重而造成大量蕾铃脱落。据中棉所郭香墨试验结果,光滑叶品种比多茸毛品种的蕾铃受害率少40.3%。
Cotton production often appear a lot of lace off, seriously affecting the yield and benefits of cotton. There are many reasons for the falloff of the buds. It is only by taking appropriate measures that it is possible to effectively reduce the falling and falling bells and increase the yield and benefits. First, the factors affecting the fall of the bell 1, breed factors. Under the same conditions, due to the differences between varieties, the extent of the fall of the buds are not the same. First of all, there is a big difference in the amount of squaring between cultivars and the amount of bolls. Second, bugs and cotton bollworms like to spawn on cotton varieties with multiple hairs, and multiple varieties of hairs increase the adhesion of the eggs. Easy to be blown by the wind and washed away by the rain, cotton due to serious damage caused by a large number of buds off. According to the results of the CICC Guo Xiangmo tests, the rate of damage to the buds of smooth-leafed plants was 40.3% less than that of the more-shedd ones.