【摘要】 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。结果表明,木质素污泥能有效改良土壤酸性,使达到植物生长发育适宜的pH条件。同时,利用污泥改土能有效抑制酸壤中毒害元素的活性,有利于提高土壤中有效磷的含量,对促进植物吸收营养元素具有积极作用。木质素污泥改土的适宜用量为耕层土壤量的0.25%～0.50%,细度≤0.9mm。更多还原

【Abstract】 The improving effects of acid soil with lignin- sludge from treating pulping black liquor was studied using indoor culture methods with plastic reactors. The lignin- sludge improved efficiently the acidity of acid soil and changed the pH to suitable for the growth of plants. Improving soil with the sludge restrained the activity of toxic elements, such as aluminum efficiently and increased the content of available phosphorus in acid soil, which promoted the plants for the absorption of nutrient elements. Under the suitable pH, the activity of aluminum reduced about 40% and the efficiency of phosphorus increased about 14% . The amount and the size of lignin- sludge to improve the acid soil were about 0.25% ～ 0.50% of the 0～ 20 cm soil weight and ≤ 0.9mm, respectively.更多还原