博乐地区土壤有机质及不同粒径颗粒对土壤负电荷贡献的研究

采集该地区主要土类剖面21个,分层土样80个,进行理化分析,数据经通径分析的结果表明,有机质和不同粒径颗粒对土壤负电荷贡献的相对重要性依次为有机质>粘粒>粉粒。因土壤负电荷量与有机质和粘粒含量呈显著的相关性,故在土壤表层有机质对土壤负电荷的贡献常居于首位,而在剖面的中下部则粘粒对负电荷的贡献大于有机质。该地区土壤粘粒和有机质平均每100克所具有的负电荷量分别是15.7和273毫克当量。

Study on Contribution of Organic Matierial and Particles with Various Grain Sizes to Negative Charge in the Soil of Bole

In this district were collected 21 sections of main soil and 80 of stratifying soil samples whieh were eonducted by physical and chemical analysis. Being analysized by the general diameter, the data showed that the contribution of organic material and the particles with various grain sizes to the relative importance of soil negative charge takes the following proper order: organic material>clay>silt. As the negative charge quantity and the contents of the clay in the soil show a clear coherence, the contribution of organic material in the veneer to the negative charge always takes the first place while in low-middle section the contribution of clay to the negative charge is above the organic material. The mean negative charge quantity pocessed by the clay and organic material of the district in per100g is respectively 15.7 and 273mgN.