期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：300
期号：2
页码：1-6
DOI：10.1088/1755-1315/300/2/022069
出版社：IOP Publishing
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 no-tillage, and there was no significant difference among the three tillage methods in 10-20cm soil layer.
