Effects of Tillage Practices on Soil Fertility in Loess Plateau

3rd International Symposium on Resource Exploration and Environmental Science

生态环境科学

Meng, Tingting^1^2^3^4 ; Sun, Zenghui^1^2^3^4 ; Cheng, Jie^1^2^3^4

Shaanxi Provincial Land Engineering Construction Group Co. Ltd., Xi'an

710075, China^1

Institute of Shaanxi Land Engineering and Technology Co. Ltd., Xi'an

710075, China^2

Key Laboratory of Degraded and Unused Land Consolidation Engineering, Ministry of Land and Resources, Xi'an

710075, China^3

Shaanxi Provincial Land Consolidation Engineering Technology Research Center, Xi'an

710075, China^4

关键词: Available phosphorus;    Available potassiums;    High-efficiency;    Rotary tillages;    Soil nutrients;    Technology system;    Tillage methods;    Tillage practices;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/300/2/022069/pdf
DOI  :  10.1088/1755-1315/300/2/022069

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In order to determine whether there is a threat to soil nutrient content by long-term no-tillage cultivation in loess plateau, a suitable high-yield and high-efficiency tillage technology system is established. This study was conducted in the Changwu Loess Plateau Agro-ecological Experiment Station of the Northwest A&F University in Changwu County, Shaanxi Province. The experimental field for no-tillage cultivation was selected for three consecutive years. In September 2015, no-tillage and tillage were carried out separately before winter wheat planting. And rotary tillage 3 kinds of farming treatment. After harvesting of winter wheat in 2016, the contents of available phosphorus, available potassium in 0∼30 cm soil layer under different tillage methods were analyzed. The results showed that in the 0∼30cm soil layer, the contents of available phosphorus and available potassium in the soil under three tillage methods decreased along the profile. The contents of available phosphorus and available potassium in 0∼10 cm soil layer were significantly higher than that of tillage and rotary tillage (p rotary tillage > no-tillage, and there was no significant difference among the three tillage methods in 10-20cm soil layer.