不同比例砒砂岩与沙复配对作物产量及土壤性质的影响

Soft rock and sand are two important nature resources in Mu Us Sandy Land. Use the complementary nature of them, we mixed soft rock and sand in different ratio to study the effect on crop yield and soil properties. There are there treatments: 1:1(C1), 1:2(C2) and 1:5(C3). Each treatment was repeated three times and the crop was winter wheat. The results showed that: The highest crop yield treatment was C3, Which was 4.4% higher than C2 and 8.7% higher than C1. The bulk density of the new mixed soil: C3>C2>C1, water stability aggregate: C1>C2>C3, soil organic matter: C3>C2>C1. After crop planting, soil bulk density of each treatment was decreased and water stable aggregate was raised. Soil organic matter of C1 and C2 were raised, but C3 has a little decrease. Soil total nitrogen, available potassium and organic matter were all at very low levels after crop growing except available phosphorus. In order to increase mixed soil nutrients, more nitrogen, potassium, and organic fertilizer should been applied in the subsequent cultivation, and ultimately achieve the sustainable use of new arable land. This study can provide a theoretical basis and technical support for soil desertification control, soil erosion prevention, sustainable development and utilization of Mu Us Sandy Land.