The Study On The Physical And Chemical Change And Effect Of Different Alkaline Soil In The Improvement Processes With Sulfur-removal Waste Residue

Study on effect of using sulfur-removal waste residue (the main composition is gypsum) to improve the alkaline siol in the method of siol column indoor. The results are as follows: With the alkalinityof siol increasing,different alkalinities siol become inferior in the physical and chemical property. The higher alkalization degree, the more disadvantagous crops seed and growth. When the alkalinity of soil with gypsum is as well different. The effciency is better with the siol alkalinity increasing.And the alkalinity is higer, the increasing scape is bigger. Combinating the siol column and potted plant experiment synthesize analysis that the soil alkalinity below 30% can be all improved by hydraulic and agricultural measure without the chemical amendment. When the alkalinity is over 30%, however, the alkaline soil must be made use of the chemical measure gathering water conservancy to attain improvement .To use the binary construction in the apply methods on improving alkaline soil with gypsum further research discovery: Alkalinity above 30%, 1:1 structure is obviously supperior to 1:3 structure. 1:1 it is better effect of improvement, quickly volocity, economizing gypsum and water than 1:3 structure. When the alkalinity is below 30%, adopt 1:1 constructure is also supperior to 1:3 in the effect and colocity. But, in the economizing gypsum side, 1:1 structure is inferior to 1:3.