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为了在黄土丘陵沟壑区坡度较大、水土流失严重的山地寻求一个恢复生态良性循环、提高植被覆盖率、增加生物产量、延长利用年限的优化种植模式,并使林、草有机的结合起来,在短期内增加能源、经济、生态效益。我们在宁南山区的西吉县马建乡荒山荒坡(海拔2050米)带建成了万亩连片的复合型草灌长期栽培地。经过四年的试验研究,初步认为用这个模式治理黄土高原半干旱丘陵地带效益是十分显著的。 (一)原理与设计 多种草在同一土地上合理配置,可以解决因草地上部各空间营养面和适应特性的不同而充分利用太
In order to seek a virtuous cycle of ecological restoration, improve the vegetation coverage, increase the biological yield, extend the use of the optimal planting mode of the useful life in the hilly area of loess hilly gully where the soil erosion is serious, and make the forests and grass combine organically, Short-term increase in energy, economic and ecological benefits. We have built a long-term cultivation of compound grass shrubs in the belt of barren hills (2050 meters above sea level) in Majian Township, Xiji County, south Ningxia. After four years of experimental study, it is preliminarily thought that the benefit of using this model in the semi-arid hilly areas of the Loess Plateau is very significant. (A) principles and design A variety of grass in the same land reasonable allocation, can solve the upper part of the grassland due to the nutritional surface and adapt to different characteristics and make full use of too