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Slow-release compound fertilizer and preparation method thereof
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A slow-release compound fertilizer and trace element technology, applied in urea compound fertilizer, nitrogen fertilizer, potash fertilizer and other directions, can solve problems such as rainwater leaching loss, and achieve the effects of improving fertility and utilization rate, prolonging fertilizer efficiency, and improving fertilizer efficiency.
Pending Publication Date: 2021-06-04
广西桉塔森农业科技有限公司
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If ordinary compound fertilizers are used, the rainwater leaching loss is particularly serious
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Embodiment 1
[0024] A slow-release compound fertilizer, comprising the following components in parts by weight: 40 parts of sepiolite, 300 parts of urea, 100 parts of ammonium dihydrogen phosphate, 200 parts of potassium chloride, 10 parts of calciumpowder, 5 parts of borax, 5 parts of magnesium EDTA, 1 part of zinc EDTA, 0.5 parts of copper EDTA, 0.1 part of iron EDTA, 0.1 part of molybdenum EDTA, 0.1 part of manganese EDTA.
[0025] The preparation method of described slow release compound fertilizer comprises the following steps:
[0026] (1) the sepiolite, urea, ammonium dihydrogen phosphate, potassium chloride, calcium powder, borax and trace elements are mixed uniformly to obtain a mixed material;
[0027] (2) Add the mixed material into a mould, extrude the mixture under a pressurized condition of 26-30Mpa, take it out from the mold to obtain a slow-release compound fertilizer, which is a rhombus with a side length of 5cm .
Embodiment 2
[0029] A slow-release compound fertilizer, comprising the following components in parts by weight: 60 parts of sepiolite, 500 parts of urea, 300 parts of ammonium dihydrogen phosphate, 400 parts of potassium chloride, 30 parts of calcium powder, 15 parts of borax, 7 parts EDTA magnesium, 3 parts EDTA zinc, 2 parts EDTA copper, 1 part EDTA iron, 0.5 parts EDTA molybdenum, 0.5 parts EDTA manganese.
[0030] The preparation method of slow release compound fertilizer is the same as embodiment 1.
Embodiment 3
[0032] A slow-release compound fertilizer, comprising the following components in parts by weight: 50 parts of sepiolite, 400 parts of urea, 200 parts of ammonium dihydrogen phosphate, 300 parts of potassium chloride, 20 parts of calcium powder, 10 parts of borax, 6 parts of EDTA magnesium, 2 parts of EDTA zinc, 1 part of EDTA copper, 0.5 part of EDTA iron, 0.3 part of EDTA molybdenum, 0.2 part of EDTA manganese.
[0033] The preparation method of slow release compound fertilizer is the same as embodiment 1.
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Abstract
The invention provides a slow-release compound fertilizer. The slow-release compound fertilizer is prepared from the following components in parts by weight: 40 to 60 parts of sepiolite, 300 to 500 parts of urea, 100 to 300 parts of ammonium dihydrogen phosphate, 200 to 400 parts of potassiumchloride, 10 to 30 parts of calciumpowder, 5 to 15 parts of borax and 5 to 10 parts of trace elements. The invention also provides a preparation method of the slow-release compound fertilizer. The slow-release compound fertilizer can solve the problems of common compound fertilizers from the following aspects: 1, the solubility of the compound fertilizer is slowed down and the rainwater leaching loss is reduced by increasing the physical properties of the particle size and the particle density of the compound fertilizer; 2, by adding trace elements such as calcium, boron and chelated magnesium, zinc, copper, molybdenum, iron and manganese, the fertilizer efficiency of the compound fertilizer can be improved through the synergistic effect of multiple elements. 3, natural sepiolite is added as a carrier, so that the compound fertilizer is slowly released, and the fertilizer efficiency is prolonged.
Description
technical field [0001] The invention relates to the technical field of agricultural fertilizers, in particular to a slow-release compound fertilizer and a preparation method of the fertilizer. Background technique [0002] Chemical fertilizers are fertilizers used in existing agriculture. Since the macronutrient elements nitrogen, phosphorus, and potassium in the soil cannot meet the growth needs of crops, it is necessary to use chemical fertilizers containing nitrogen, phosphorus, and potassium to supplement them. Fertilizers containing only one nutrient element that can indicate the content are called unit fertilizers, such as nitrogen fertilizers, phosphorus fertilizers, and potassium fertilizers. Any chemical fertilizer that contains two or more of the three nutrient elements nitrogen, phosphorus, and potassium and whose content can be indicated is called a compound fertilizer. Fertilizers are often lost in rain or high temperature after application, resulting in waste ...
Claims
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