论文部分内容阅读
对供试区分析土壤中的氨态氮和硝态氮含量,用区域化变量理论和半方差函数分析,研究结果表明不同深度土壤中氨态氮和硝态氮含量具有空间变异性,均属于中等程度变异。通过对其半方差函授进行拟合,其变异程度主要由土壤本身的空间结构引起,不同深度土壤中氨态氮和硝态氮含量的空间相关尺度不同。
The contents of ammonia nitrogen and nitrate nitrogen in soils were analyzed by regional variables theory and semi-variance function analysis. The results showed that the contents of ammonia nitrogen and nitrate nitrogen in different depths had spatial variability, all of which belonged to Moderate variation. Through fitting the semivariogram correspondence, the degree of variation is mainly caused by the spatial structure of soil itself. The spatial correlation scales of ammonia nitrogen and nitrate nitrogen in different depth soil are different.