A method for improving wind-sand soil by using multi-element compound fertilizer

Abstract

The invention relates to a method for improving sand soil by using a multi-element compound fertilizer, the multi-element compound fertilizer comprises the following raw materials (calculating according to 1000kg of raw materials): 465kg of urea, 0.2-0.4kg of SODm, 255kg of monoammonium phosphate, 105kg of potassium chloride, 135-157.5kg of bentonite and 17.5-40kg of desulfurized gypsum. The multi-element compound fertilizer can adjust soil acidity and alkalinity, reduces sand grains content of sand soil, increases cosmid content, promotes the formation of an agglomerate structure of the sand soil, promotes the accumulation of the organic matter in the sand soil and enhancement of fertility, and enhances the drought resistance, cold resistance and anti-saline-alkaline capability of crops planted on the sand soil, celery and tomato are planted on the improved alkalescence sand soil, the yield of tomato is increased by 5.5%, and the yield of celery is increased by 24.6%.

Description

Technical field: [0001] The invention relates to a method for improving sandy soil by using multi-element compound fertilizer. Background technique: [0002] Domestically, there are literature reports on the effect of using desulfurization waste to produce dealkalized modified fertilizer on the effect of increasing crop production. For example, Huang Dezhi of Dalian University of Technology and others applied for a national patent "A kind of wet desulfurization waste dealkali modified fertilizer and its preparation method" (application number: CN201110190313.4) in 2011, which introduced a wet desulfurization waste It is a dealkalized modified fertilizer, and its raw materials are composed of desulfurized gypsum, chitosan oligosaccharides, fertilizer substances, etc. According to research, after applying this dealkalized modified fertilizer, the yield of celery increased by 11.5%, and the yield of cotton increased by 8.5%. Compared with the present invention, this research ...

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Problems solved by technology

2. There are domestic literature reports on the impact of the addition ratio of phosphogypsum in compound fertilizers on compound fertilizer granulation and product quality; Literature reports on storage performance impact

[0008] In China, there are literature reports on the improvement effect of desulfurization waste and organic fertilizer on saline-alkali land; there are literature reports on the effect of soil structure modifiers such as humic acid on the improvement of water-stable aggregates in sandstorm soil; there are literature reports on the improvement effect of peat on sandstorm soil. Literature reports; but there is no literature report on the effect of adding desulfurized gypsum and SODm to compound fertilizers on sandy soil improvement

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