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Experiment on the improvement of alkali soil by furfural sludge



Experiment on the improvement of alkali soil by furfural sludge



Soils Turang 19(3): 130-134



In pot and field trials in 1979-82 in Beijing suburbs, crusted alkali soil with a soluble salt content of about 1%, a pH > 9.5, ESP of 36-56%, N content of 0.022-0.031%, available P content of 2-4 p.p.m. and an OM content of 0.42-0.62%, was treated with furfural sludge, a by-product of furfural production from maize cob, a strongly acid organic substance containing organic matter > 98%, with a pH of 1.8-2.0, N content 0.5-0.6%, P2O5 0.12-0.15%, K2O of 0.15% and humic substances 30-36%.

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