摘要
试验表明,在干旱的黄土丘陵区采用覆盖造林技术,覆盖物选用普通农用塑料薄膜和草类,覆盖塑料薄膜与对照相比,成活率提高幅度分别为2％～17％和17.1％～32％;覆草提高成活率的幅度低于覆膜。试验结果还表明,覆盖不仅能显著促进当年苗木的生长,而且也能促进幼林的生长,其原因主要是提高了林地的土壤水分。
Covered afforestation techniques were adopted in arid rolling loess region. Ordinary plastic film used in agriculture and various kinds of grasses were usually selected to be used as the cover material. The experiment indicates that survival rate of afforestation covered by grasses and plastic films increased by 2%-17% and 17.1%-32% respectively,and that covered by plastic film is higher than that by grasses. The experimental results also indicate that covered afforestation not only can improve the survival of seedlings in the same year,but also can improve the growth of young forest because of the improvement of soil moisture on the forest - land.
出处
《中国水土保持》
北大核心
1991年第8期38-40,共3页
Soil and Water Conservation in China
