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塿土中有机氮的构成以酸解态氮为主,占全氮量的58.7%,残渣态氮占41.3%.酸解态氮含量为62.2mg-N/100克土,氨基酸态氮为21.4mg—N/100克土.施用不同肥料会影响(?)土有机氮的化学组成,从而对后茬作物产生影响.尿素氮对作物的有效性高而残留量低,单施尿素使土壤酸解态氮下降而降低肥力;而有机肥对当季作物有效性低,但残留量大,能促使土壤残渣态氮向易效的酸解态氮转化,从而提高土壤肥力,有利于后茬作物生长.建议生产上采用有机和无机肥配合施用的方式.
Soil organic nitrogen mainly consists of acid-dissolved nitrogen, accounting for 58.7% of total nitrogen and residual nitrogen, accounting for 62.2mg-N / 100g of soil and amino acid nitrogen of 21.4% mg-N / 100 grams of soil.The application of different fertilizers will affect the chemical composition of soil organic nitrogen (?) and thus affect the succession crops.Urea nitrogen has high availability to crops and low residue, However, organic fertilizers have low availability to the crop, but the residual amount is large, which can promote the transformation of soil residual nitrogen into easy-soluble acid-soluble nitrogen, which can improve the soil fertility and is favorable for the following crops Growth. The proposed production of organic and inorganic fertilizer with the application of the way.