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截止于今,棉花施肥在理论及实践中存在着较大差误,主要根据如下。 一、耕层以下棉根相当多 棉花属直根系作物。一般主根可达2米或2米以上,支根不仅在耕作层内占着较大的比例,在耕层以下20～70厘米内亦相当多。根据我们1984
As of now, cotton fertilizer in the theory and practice there is a big difference, mainly based on the following. First, a considerable number of cotton roots below the cotton root straight root crops. General main root up to 2 meters or more than 2 meters, branching not only in the tillage layer accounting for a large proportion of 20 to 70 cm below the tillage is also quite a lot. According to us 1984