土地利用方式对土壤质量性状的影响

Effects of Different Land Use on Soil Quality Factors

调查分析了冬小麦夏玉米轮作、棉花、果园、大田蔬菜和大棚蔬菜等不同土地利用方式对土壤质量性状的影响。结果表明 :与常规冬小麦、夏玉米轮作的土壤相比 ,果园土壤田间持水量、土壤pH、土壤全氮含量均显著降低 ,特别是土壤全氮含量降低了 37 30 %,而土壤有效锌、有效铜以及可溶盐含量则分别提高 1 1 0 4 %、 32 0 5 %和 1 7 86%;蔬菜大棚土壤有机质、全氮、速效磷、速效钾、有效铁和有效锌含量显著提高 ,特别是土壤速效磷含量增加极其显著 ,达到大田土壤速效磷含量近 4 6倍 ,速效钾和有效锌含量也增加了 2 5倍多 ,土壤质量显著提高 ,土壤可溶性盐含量平均提高了一倍以上 。

The objective of the research was to analyze the effects of different land use on soil quality factors. 84 representative samples were collected form crop field, cotton field, orchard, vegetable field and protected land for vegetable production. The results showed that soil water content, pH, total N decreased, but available Zn, Cu and soluble salt content increased significantly in the field of orchard compared to the crop field. Soil O M , total N,available P, K and available Zn, Fe increased significantly in the protected land, compared to crop land And the soluble salt content also increased,which need to pay more attention to.