研究结果表明，冻融交替作用对黑土有机质、氮钾及酶活性产生重要的影响。
The experiments results show that the effect of alternative freezing and thawing has a great influence on the organic matter, nitrogen nutrition, potassium nutrition and soil enzyme activities.
冻融交替明显增加土壤中水溶性有机质的含量。
It enhances the content of water soluble organic matter greatly.
上述研究表明，冻融交替对高寒草甸土壤氮素有显著影响。
The study showed that freezing and thawing alternation had a significant influence on soil nitrogen pool in the alpine meadow.
应用推荐