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底肥是指棉花播种前经翻耕施入棉田的肥料,也包括播种或移栽同时施的种肥。棉花的生长期长,根系分布深而广,为了满足棉株生育期在不同土层吸收养分的需要,除棉田表层土壤需有一定肥力外,上壤深层也应保持较高的肥力。底肥多用有机肥料,因其肥效平稳,保持期长,既有利于棉花壮苗早发,稳长不早衰,又有利于改良土壤,培肥地力。
Base fertilizer refers to the cotton before tillage applied to the cotton fields of fertilizer, but also sowing or transplanting at the same time the kinds of fertilizer. In order to meet the need of absorbing nutrients in different soil layers during the growth period of cotton plants, the topsoil of cotton needs a certain amount of fertility, and the upper deep soil should also maintain high fertility. Base fertilizer with organic fertilizer, because of its smooth fertilizer effect, maintaining a long period, not only conducive to early cotton seedling strong, stable and not premature, but also conducive to improving the soil, fertility and fertility.