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棉花育苗,复盖尼龙薄膜,一般有两种方式,一种是从播种开始至育苗结束,一直将尼龙薄膜搭成环形棚复盖子苗床(简称环棚),另一种则是从播种到棉苗基本顶出土面阶段,将尼龙薄膜平铺在苗床上(简称平棚),以后再改搭成环棚。对于这两种育苗方法的农业气象效应差异,去年我站在城镇公社城南六队分别进行了观测,现将观测资料分析小结如下。
Cotton seedling, covering nylon film, there are two general ways, one is from the beginning of sowing until the end of nursery, has been made of nylon film ring cover shed cover seedbed (referred to as the shed), the other is from sowing to cotton Miao basically unearthed surface stage, the nylon film tiled in bed (referred to as the flat shed), then change into a ring shed. For the differences in agricultural meteorological effects between the two nursery methods, last year I stood in the south of the urban commune to observe the six southern teams. The analysis of the observed data is summarized as follows.