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目前在一般大田生产条件下,棉花的蕾铃脱落占70%左右,而其中落铃率又占总脱落的60%以上。它是影响棉花产量进一步提高的重要问题。影响棉花落铃的因素很多,但概括讲主要有病虫害、机械等造成的直接损伤脱落和内部生理脱落二类。我国广大贫下中农和科研工作者在棉花生产实践斗争中,对防止棉铃脱落方面做了大量工作,取得了不少成果。特别是无产阶级文化大革命推动了三结合的群众性科学实验的开展,对这
At present, under the conditions of general field production, the buds of cotton fall off by about 70%, and the falling rate of bolls also accounts for more than 60% of the total shedding. It is an important issue affecting the further improvement of cotton production. There are many factors that affect the falling of cotton bolls, but in general, there are mainly two kinds of direct damage and internal physiological shedding caused by pests, diseases and machinery. The vast majority of poor and middle-income peasants and scientific researchers in our country have done a great deal of work in preventing cotton bolls from falling off in the course of cotton production and have achieved quite a lot. In particular, the Great Proletarian Cultural Revolution has promoted the development of a mass scientific experiment combining the three.