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水田的氮素循环是当今世界各国农学家们十分关注的问题之一。水稻的生育与收获量很大程度上依赖于水稻能够吸收利用的无机氮数量。为了经济合理地施用氮肥,取得
Nitrogen cycling in paddy fields is one of the most concerned issues among agronomists in all countries today. The fertility and yield of rice depend heavily on the amount of inorganic nitrogen that rice can absorb. In order to economic and rational use of nitrogen fertilizer, obtained