赤红壤坡地果园间种不同牧草的适应性及其持续利用研究

通过果园间作6种不同牧草对比试验，筛选出4种适宜于赤红壤坡地种植的牧草。同时开展了利用刈割后的牧草覆盖野生蔬菜地和覆盖、填埋果树周围（树冠滴水线以外）土壤的试验，结果表明，利用刈割牧草覆盖填埋处理来改良土壤，可明显增加土壤水分，提高土壤肥力，进而促进果树生长。这种方式是解决牧草持续利用的一种好的途径。

The Preliminary Study on the Suitability and Sustainable Utilization of Different Pastures Inter-planted in the Young Orchard on the Slope Land of Latored Soils

Four kind of pastures were selected from six kind of pastures tested and showed that the four pastures are suitable for inter-planting in the young orchard on the slope lands of latored soil. Owing to the high biomass and productivity of pastures, how to use these pastures is a problem to be solved. Therefore, the sustainable utilization of the pastures were also studied and tested in three treatments or ways: (1) covering the surface of vegetable farmlands with the cut pastures; (2) covering the land surface around the litchi trees with the cut pastures in the young orchard; (3) burying the cut pastures into soil around the litchi trees in the young orchard. The results showed that the three treatments can obviously increase the land coverage and soil water capacity, decrease water loss and soil erosion, and improve soil fertility and land productivity, consequently accelerate the growth of the fruit trees. These ways are good examples to deeply use the cut pastures.