【摘要】 在人称“红色沙漠”的南方花岗岩风化区,水土流失严重,治理难度大,为探索其有效治理途径,作者于1986～1988年在这类土地上进行了绢毛相思与糖蜜草混交试验研究,结果表明:林草混交当年植被覆盖率达到90％;林草混交区的径流量和泥沙流失量分别比对照区减少51.53％和98％;林草混交可有效地提高土壤肥力,改善生态环境,且社会效益显著。更多还原

【Abstract】 In the weathered granite region of south China called as "red desert" by the people,the soil and water loss are very severe and management is vey difficult. In order to investigate a way of effective management, the author conducted an experimental study of plantation by mixing Acacia holosericea and Melinis Minueiflora Beauv on such kind of land in the period of 1986-1988. It is shown by the results that the ratio of vege- tation cover by mixing trees and grasses in the same year can reach 90%;the loss of water and sediment. in the mixed planted region is reduced by 51. 5% and 98% respectively comparing with that of checked area and; the soil fertility can be increased and ecological environment improved effectively by mixed plantation of trees and grasses.更多还原