The Study On The Physical And Chemical Processes In Improvement Of Alkaline Soil With Gypsum

Study an effect of using sulfur-removal waste residue (the vice-product produced by sulfur-removal device of the factory using coal as energy resource to absorb oxidizing sulfur, whose mainly composition is gypsum) as an amendment to the alkali soil in theory. With certain water as leaching requirement leaching soil column indoor employed with certain quantity sulfur-removal waste residue after collecting and analyzing representative soil sample. Collecting and analyzing the filtrate, then calculate the data and speculate the result to guide the field production.First compare the sulfur-removal waste residue with pure gypsum. Based on the waste residue continuing to use the theory of pure gypsum as amendment in improving alkaline soil establish a plan that with saving resources, water and with better effect and rapid speed. Reach on the effect of the same-ion effect and salt effect of NaCL in course of improving the alkaline soil. Then after the certain amount of gypsum for exertion is decided, compare the effect of exertion of waste residue for one time with for more than one time. Combine with the local cultivation condition and summarize all advantage measure to guide the work in field.