粘土矿物对蛋白质氮矿化的影响

本试验以粘粒(蒙脱)和蛋白质(明胶)为基本材料,较详细地研究了粘土矿物对蛋白质氮矿化的影响。指出:1.蛋白质与粘粒所处的状态不同,能导致蛋白质氮分解率的不同,其中复合物中的蛋白质氮分解率小于混合物,而后者又小于纯蛋白质氮;2.对于复合物或混合物来说,蛋白质在其中的比例越大其分解率就越大,而纯白质氮则相反,3.蛋白质-粘粒中的氮或纯蛋白质氮在土壤中的分解率小于在石英砂基质上的分解率,即土壤具有保护蛋白质氮免遭微生物分解的作用,不同土壤的这种保护作用不一样,主要是由于不同土壤粘土矿物的不同所致。

EFFECT OF CLAY MINERALS ON MINERALIZATION OF NITROGEN IN PROTEIN

This paper deals with the effect of clay minneral (montmcrillonite) on the mineralization of nitrogen in proptein (gelation). The results obtained showed that (1) different states in which protein and clay mineral remained could lead to different mineralization percentages of nitrogen in protein in the order: complex < mixture < pure protein; (2) the more the protein-nitrogen in complex or mixture, the more the nitrogen mineralization, but the reverse was true for pure protein; (3) the mineralization percentage of nitrogen in protein was less in soil medium than in quartz sand meditun no matter what state it existed, showing that soil might proptect prorein nitrogen from degradation by microorganisms, and this protection varied with different soils wing to the different clay minerals in different ce soils.