赤泥耕土制备技术

以植物性废料为赤泥的改性剂，研发了适用性广、可大量消纳赤泥的赤泥耕土制备技术。该技术的基本原理是利用植物废料水解、发酵产生的腐殖酸和腐殖质中和赤泥的碱性、稀释并络（鳌）合赤泥中的有害元素、提高赤泥的疏松度、为赤泥添加植物生长所需养分。分别以玉米秸秆、蔗渣和废醪液、杂草为赤泥改性剂进行的赤泥耕土制备试验均取得了良好效果，其中以玉米秸秆为改性剂的试验表明，所得赤泥耕土的容重为1.3 g/cm³，pH值为7.9，养分增加，植物可在其中正常生长。

Preparation Process of Cultivated Soil Rehabilitated from Red Mud

Taking the plant waste as modifier of red mud, the preparation process of cultivated soil rehabilitated from red mud with wide applicability, which can treat with a large number of red mud was investigated. The basic principle of this technique was that the harmful elements in red mud are diluted by and made a complex (sequestration) process with humic acids produced by the hydrolysis and fermentation of plant waste and with the alkaline in humus and red mud so as to improve the porosity for the red mud and supply with the needs for plant growth. Good results have been achieved to prepare the cultivated soil rehabilitated from red mud by using corn stalks, bagasse and wastewater, weeds as modifier of red mud respectively in the tests, Among these, the test with corn stalks as a modifier showed that the plants grew normally in the cultivated soil with the bulk density of 1.3 g/cm³, and pH value at 7.9.