论文部分内容阅读
对彰武县北部沙地不同利用类型立地的土壤钾素状况的研究表明:彰武县北部沙地土壤全钾含量处于较高水平,速效钾、缓效钾含量仅杨树纯林及樟子松、油松和樟子松、杨树混交林为较高水平,而大面积的樟子松林和农业用地均为较低水平。
The study on the status of soil potassium in different types of sand land in the northern part of Zhangwu County shows that the content of total potassium in the sandy land in the northern part of Zhangwu County is at a high level, that of available potassium and slow-acting potassium are only in Populus simonii and Pinus sylvestris var. Pinus tabulaeformis and Pinus sylvestris var. Mongolica and poplar mixed forest are at a high level, whereas large-area Pinus sylvestris var. Mongolica and agricultural land are at a lower level.