棉花增产需要一系列的综合栽培技术,在华北地区除设法及早获得整齐的全苗,并使之生育正常健壮以外,另一方面在开花期间需要有正确的摘心整枝技术。一适时摘除顶心在河北省冀东、冀南等地区,部分农民有及早摘心,早熟增产的经验,1953年在河北成安、武安等地调查,一般连作地力比较弱的棉田,打顶过晚(立 Increasing cotton production requires a series of integrated cultivation techniques, and in North China, in addition to trying to get a neat whole plant early enough to give birth to normal robustness, on the other hand the right topping pruning technique is needed during flowering. A timely removal of the top center in Hebei Province, Jidong, Jinan and other regions, some farmers have early topping, early maturity stimulation experience, in 1953 in Hebei Cheng’an, Wu’an and other places survey, generally even for the weaker cotton fields, topping too late (Stand