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保苗工作是华北棉花增产关键问题之一,这里所指的保苗工作,包括保证全苗与壮苗两方面。根据1953年河北及山西两省农村调查,一般棉田都存在缺苗及幼苗生育不良的现象,尤其是缺苗情形很普遍,一般自10—40%不等;有的棉田虽然缺苗率较低,但是幼苗生育不健壮或不整齐;这都是目前棉花增产上亟待解决的问题。棉花的保苗工作,除了与保墒发生直接关系,已经在上一期调查总结中介绍以
Seedling maintenance work is one of the key issues for cotton production in North China. The seedling conservation work here refers to both ensuring full seedling and strong seedling. According to the survey of rural areas in Hebei Province and Shanxi Province in 1953, the lack of seedling and seedling malnutrition exist in most cotton fields. In particular, the lack of seedlings is common, generally ranging from 10-40%; while in some cotton fields, the seedling rate is relatively low , But the seedling growth is not robust or irregular; this is a problem to be solved on the current yield increase of cotton. Cotton seedling work, in addition to the direct relationship with the soil moisture has been introduced in the previous survey concluded