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Through experiments in standard runoff plots, this paper studied effects of leucaena leucocephala hedgerow and vetiver hedgerow on bulk density, particle distribution and nutrient loss of the surface soil (the soil depth was 0–20 cm) of sloping farmland in the purple soil area, Sichuan, China. Results showed that: (1) the two hedgerows can reduce soil bulk density, and vetiver hedgerow had a bigger...
China has the most population possessing only 7% farming land of the world. With the development of economy and the increasing of living conditions, people need more fresh vegetables and fruits. Facilities farming are good ways to get products all the year round. However, using farmland intensively brought many problems, such as the low utilization rate of fertilizer, degradation of soil quality,...
Soil and water loss is an important source of water eutrophication. In this study, soil erosion were measured in the four types of cultivated lands (Paddy land, Terraced farmland, Sloping farmlands <; 25°, and Sloping farmlands ≥ 25°) in Xiaojiang River basin, Chongqing of China. In addition, water qualities were investigated in 5 reaches of Xiaojiang River (Qukou, Yanglu, Gaoyang, Huangshi, and...
By using the test method of the field district, we research and compare the content variation features of the nitrate nitrogen, the ammonia nitrogen on the surface of the water and the growth status of rice plant which are in the different water table management after fertilizing in the transgenic rice . The results show that the whole developing trend of the content of the nitrate nitrogen is rapidly...
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