Trace element synergistic compound fertilizer and preparation method thereof

Abstract

The invention discloses trace element synergistic compound fertilizer. The compound fertilizer comprises the following components in parts by weight: 180 to 250 parts of urea, 100 to 150 parts of ammonium chloride, 300 to 330 parts of potassium chloride, 300 to 340 parts of monoammonium phosphate, 200 to 300 parts of calcium silicate, 80 to 100 parts of magnesium sulfate, 13 to 30 parts of trace element additives, 20 to 50 parts of organic matter additives, 15 to 30 parts of sludge and 10 to 15 parts of rare earth element, wherein the trace element additives comprise the following components in parts by weight: 3 to 5 parts of chelated zinc, 3 to 5 parts of chelated iron, 3 to 5 parts of chelated copper, 3 to 5 parts of boric acid, 0.5 to 2 parts of ammonium molybdate and 0.5 to 2 parts ofpolycarboxylic acid nickel. The trace element synergistic compound fertilizer provided by the invention is suitable for the middle and later period of rice production, can promote the growth of riceand can meet the requirements of the rice on different trace elements during growth.

Description

technical field [0001] The invention belongs to the technical field of compound fertilizer preparation, and in particular relates to a trace element synergistic compound fertilizer and a preparation method thereof. Background technique [0002] In the field of agriculture, the use of fertilizers has been very extensive; however, due to environmental, crop or meteorological reasons, only a part of the applied fertilizer is absorbed by the crops, and most of the fertilizer is seriously lost due to wetting, volatilization or mineralization, resulting in fertilizer Waste of resources, low utilization rate of fertilizers by crops, pollution of soil or water due to residual fertilizers, soil compaction, eutrophication of surface water, etc., resulting in increased fertilizer costs and large amounts of fertilizers, which can easily cause crop burns; on the other hand, The growth process of rice requires micronutrients. If rice lacks the absorption of micronutrients, it will result ...

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Problems solved by technology

[0002] In the field of agriculture, the use of fertilizers has been very extensive; however, due to environmental, crop or meteorological reasons, only a part of the applied fertilizer is absorbed by the crops, and most of the fertilizer is seriously lost due to wetting, volatilization or mineralization, resulting in fertilizer Waste of resources, low utilization rate of fertilizers by crops, p

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