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近年来,北京市水利科学研究所和北京市永乐店农场合作,采用成本低,取材容易的糠醛渣——糠醛厂的废料,配合其它措施,改良岗瓦碱土取得了显著的效果,深受群众欢迎。一、糠醛渣改碱的增产效果和经济效益施用糠醛渣后,通过灌溉和其他农业措施的综合作用,耕地中岗瓦碱斑逐年缩小,作物产量逐年增加。据测定在有岗瓦碱的小麦地里每亩施用1000斤糠醛渣第一年增产5.3%,第二年可达152.1%,每亩施用2000斤的第一年可翻一番,第二年可增产97.9%。每亩施2500斤的第一年可增产26.3%,第二年可达66.9%。以每亩施1000斤的效果最好。糠醛渣、石膏、黑矾都能改良岗瓦碱,但以糠醛渣最经济。糠醛渣改碱效果较石膏略差,但价格便宜,每公斤0.005元(每吨
In recent years, Beijing Institute of Water Conservancy and Beijing Yongle Farm cooperation, the use of low-cost, easy to obtain furfural residue - furfural plant waste, with other measures to improve the Valsalva alkaline soil has achieved remarkable results by the masses welcome. First, the furfural residue Alkali increase production efficiency and economic benefits After the application of furfural residue, irrigation and other agricultural measures, the combined effect of arable land to reduce the monthly base varnish, crop production increased year by year. It has been determined that the application of 1000 kg of furfural residue per mu in paddy with wheat base yields 5.3% in the first year and 152.1% in the second year. The first year of 2000 kg per mu can be doubled and the second year Can increase 97.9%. The first year of applying 2500 pounds of rice can increase 26.3% in the first year and 66.9% in the second year. 1000 kg per acre to exert the best results. Furfural residue, gypsum, black alum can improve the tile base, but the most economical furfural residue. Furfural alkali slag effect slightly worse than gypsum, but the price is cheap, 0.005 yuan per kilogram (per ton