NPM separately increases hydrolysable N, aminoacid N and amino sugar N in topsoil by 192.58 mg/ kg, 223.44 mg/ kg and 25.66 mg/ kg, but ammoniacal N content is decreased.

  • NPM处理土壤耕层水解总氮与对照相比增加192.58mg/kg、氨基酸氮增加223.44mg/kg、氨基糖氮增加25.66mg/kg,而氨态氮含量则大幅度降低;

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