棉花整枝本来是我国北方棉区部分棉农的传统习惯,并没有什么科学依据。到二十世纪初,我国农业科学有了发展,逐渐应用科学方法对棉花生产技术措施加以鉴定。对棉花整枝的效益,三十年代便有人怀疑,并以科学方法开始田间试验,如北方棉产区的定县农场,一九三四年到三五年,分别在肥地和一般地上连续做两年整枝和不整枝的试验,同时还进行经济核算,结果是两年肥地上整枝的棉花,分别亩产籽棉一百二十三斤二两和一百五十四斤四两,比不整枝的减产二十斤五两到三十二斤三两。加上整枝工钱,每亩棉花损失四元四角和六元二角。在一般地上整枝减产三十七斤,连工钱每亩损失五元五角三分。 There are no scientific bases for cotton prunings, which were traditionally used by some cotton farmers in the northern cotton area of ​​our country. By the beginning of the twentieth century, agricultural science in our country had been developed and scientific methods were gradually applied to appraise the technical measures of cotton production. The effectiveness of cotton pruning was apprehended in the 1930s and started in field experiments with scientific methods such as Dingxian Farm in the northern cotton producing region. From 1934 to 1985, they were continuously cultivated on fertile land and in general Two years of pruning and not pruning of the test, but also for economic accounting, the result is two years fertile land pruning of cotton, cotton seedlings per acre yield 123 twenty-two and one hundred and fifty-four pounds four two, than the whole branch The reduction of twenty pounds five two to thirty-two pounds thirty-two. Coupled with the whole branch of the money, cotton loss of four yuan per acre and six yuan two corners. In general pruning production cuts thirty-seven pounds, even the loss of five cents per acre three cents.