【摘要】 东北高寒地区麦田土壤酶活性具有明显的季节变化 ,其中纤维素酶和转化酶的最大值在7月份 ,脲酶和过氧化氢酶的最大值是在 8月份 ,而脱氢酶的最小低谷值在 7月份。用灰色关联分析找出了影响土壤酶活性总体的主要因素为弹尾类动物、活性有机质、土壤pH值和含水量。各种土壤酶分别和 4种主要因素之间建立 5个灰色数学模型 [GM( 1,5) ]。除脲酶外其它四个数学模型的平均相对误差很小 ,模型拟合得很好。更多还原

【Abstract】 The study was made on northeast heavyly frigid region of China from April to September in 1993. The relationship between seasonal variation of soil Enzymatic (Cellulase, Urease, Invertase, Ccatalase and Dehydrogenase) activities and 19 ecology factors was studies, and the primary and secondary factors affecting Enzymatic Activities were sought out, in grey connected analysis. Data set was composed of soil enzymatic activities and 4 ecology factors (Collembola, Active O.M., pH value and Moisture), then five grey models [GM(1,5)] were established.更多还原