The improving effects of acid soil with lignin- sludge from treating pulping black liquor was studied using indoor culture methods with plastic reactors.
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。
2
The plastic cement is powdery material including 50 percent of lignin and 50 percent of corn cement according to the weight percentage.