不同有机质肥料的有机氮矿化研究

Mineralization of Organic Nitrogen of Different Organic Material Fertilizers

通过对不同有机质肥料的有机氮矿化进行室内培养研究,结果表明:在3个培养温度水平下,除牛粪堆肥外,30℃条件培养的矿化率最高,矿化速度最快,矿化率和矿化速度随温度降低而减缓。在不同有机质肥料中,鱼抽出液的矿化率最高,矿化速度也最快,矿化速度顺序是:鱼抽出液>肉骨粉>油菜饼>鱼粕>牛粪堆肥。另外,矿化率、矿化速度与有机质肥料C/N成反比。

The different organic material fertilizers are tested in door to investigate their mineralization of organic nitrogen. The results show that the mineralization rate and speed of five tested organic fertilizers, except cow dung, are maximum at 30℃ and the mineralization rate and speed slow down with temperature drop. The order of mineralization speed of tested organic material fertilizers is liquid collected from fish〉 bone meal〉 oilseed meal〉 fish meal〉 cow dung and the mineralization rate and speed is inversely proportional to C/N of organic material fertilizers.