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豆科绿肥的种类很多,其效用有两个方面:一是绿肥可以改善地力,弥补有效的有机物;二是绿肥含有植物所需的无机养分,在建立以轮作为主体的耕作制度上,绿肥茬地有良好的培肥作用。这样种植豆科绿肥有养地兼倒茬的双重意义。特别对西藏行、施不便,水土流失严重的地块,可以有效地解决部分肥源,并防止水土流失。
Legumes many types of green manure, its effectiveness has two aspects: First, green manure can improve fertility, make up for effective organic matter; second green manure contains the necessary nutrients for plants, the establishment of a rotation system as the main farming system, green manure To have a good role in fertilizer. Such a legume green manure cultivation and stubble double meaning. In particular, it is inconvenient for Tibetans to carry out land parcels with severe soil erosion that can effectively solve some of the manure sources and prevent soil erosion.