结果表明：松栎混交林对土壤的改良效果最好，草地次之，马尾松纯林则较差。
The results indicated that the effect of mixed masson pine and oak forest on soil amelioration was the best, that of grass was the second and the pure masson pine forest was the worst.
采用室内塑制质反应器培养方法，研究了制浆废液处理的木质素污泥对酸性土壤的改良效果。
The improving effects of acid soil with lignin- sludge from treating pulping black liquor was studied using indoor culture methods with plastic reactors.
因这种碱化土壤的改良难度较大，而目前从事此项工作的研究的又很少，使这相当数量的土地被常期撩荒。
Because It is more difficult to be improved and now the study for alkaline soil is also few, much land is long abandoned.
应用推荐