Due to the detrimental effects of soil disturbance, fertilization of perennial forage crops, established pastures, and s在多年生牧草、牧场和造林体系上,由于翻动土壤会产生不利影响,施肥显然主要是在有残茬的土壤上表施。
Quite a few pilot research projects have been carried out.on demonstrating new silviculture techniques for re-vegetation目前已经开展了一系列的有关造林技术的前期研究项目,但大规模的造林培育工程尚难以开展。