Application of Soil Organic Reconstruction Technology in Sandy Land Improvement

Improving sandy soil by soil organic reconstruction technology can effectively reduce soil permeability and increase soil nutrient content. The results show that the artificial plough bottom layer of 1.7 g·cm-3and 5 cm thick and the tillage layer of 1.2 g·cm-3 and 25 cm thick can be constructed on sandy soil with loess as raw material, and the water infiltration rate is reduced to 12 cm·d-1, which is 89% lower than that of sandy soil. After reconstruction, the contents of organic matter, total nitrogen, available phosphorus and available potassium were all abundant, which increased by 1.06 times, 2.07 times, 8.54 times and 1.23 times compared with sandy soil, respectively.