Brief talk on the key scientific problems and strategies of the sloping cultivated lands in the upper reaches of the Yangtze River in China

摘要

The area of sloping cultivated lands were very large with stressed soil and water losses in the upper reaches of Yangtze River, which seriously threaten the local environment and development of social economy. Based on the agriculture of water and soil resources of sloping cultivated lands in the upper reaches of Yangtze River, five measurements of sloping cultivated lands were enhanced including: 1. Developing the water system engineering of the slopeland, reasonable and high efficiency use of the sloping cultivated lands. 2. Foundation of the agroforestry ecosystem establishment of the slopeland, especially terrace hedgerow. 3. Reasonable tillage such as the cutting-slope length and down-slope tillage. 4. Improved soil, cultivated fertilizer and selected better planting techniques. 5. Constructing the ecological ditches of soil and water conservation and the control of the non-point pollution.