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Organic-inorganic block controlled release fertilizer and preparation method thereof

A technology of controlled-release fertilizers and organic materials, applied in the field of agricultural chemistry, can solve problems such as the lack of combination of organic fertilizers, difficulty in large-scale application by ordinary farmers, and easy damage to the properties of organic materials, so as to reduce nutrient loss and save labor costs , Improve the effect of fertilizer utilization

Active Publication Date: 2011-12-07
NORTHEAST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These kinds of slow and controlled release fertilizers improve the fertilizer utilization rate to a certain extent, but the price of fertilizers is high, it is difficult for ordinary farmers to apply them on a large scale, and they have not adopted the method of combining with organic fertilizers
Chinese patent 2008100123881 discloses a slow and controlled-release organic-inorganic bulk fertilizer for root application, which uses a combination of organic materials and inorganic fertilizers, and has a certain effect on improving fertilizer utilization, but the urease inhibitor used is phenyl di Hydrogen Phosphate, hard to get in the market
At the same time, the use of organic materials with a moisture content of less than 10% requires long-term high-temperature drying during production, which increases production costs and easily destroys the properties of organic materials
Under the conditions of the hydraulic press used in this patent with a pressure of 150-200 kg, some organic materials are difficult to press into blocks, such as coconut shells, rice husks, peanut shells and other particles with relatively high hardness, scattered materials, and lack of fiber connection. pressed into blocks

Method used

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  • Organic-inorganic block controlled release fertilizer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Mix peat, biogas residues, bamboo residues, livestock and poultry manure, straw, coconut bran, and waste edible fungus cultivation base materials, build and chop them up, dry them naturally to reduce the moisture to 40%-50% (W / W), and then pile them up Set to rot. Crush the decomposed organic material with a pulverizer, pass through a fine sieve with an aperture of 5mm, then dry or expose to the sun to reduce the water content to 15%-25% (W / W), and set aside

[0036] Get decomposed organic material 400kg, dicyandiamide and urea mixture 250kg (the weight content of dicyandiamide is urea weight 10%), diammonium phosphate 100kg, potassium sulfate 190kg, diatomite and bentonite mixture 50kg, micronutrient fertilizer and perlite Powder mixture 10kg. Wherein the micro-fertilizer is copper sulfate, magnesium sulfate, zinc sulfate, ferrous sulfate, boric acid, manganese sulfate, and its weight ratio with perlite is 1:1:1:1:1:1:94.

[0037] Mix the components evenly, put the m...

Embodiment 2

[0040] Mix straw, coir peat, waste edible fungus cultivation base material and distiller's grains, build and chop to make a high pile, air dry naturally to reduce the water content to 40%-50% (W / W), and then pile and decompose. Crush the decomposed organic material with a pulverizer, pass through a fine sieve with an aperture of 5mm, then dry or expose to the sun to reduce the water content to 15%-25% (W / W), and set aside

[0041] Get decomposed organic material 350kg, dicyandiamide and urea mixture 250kg (the weight content of dicyandiamide is 5% of urea weight), monoammonium phosphate 150kg, potassium chloride 190kg, bentonite 50kg, micronutrient fertilizer and perlite powder mixture 10kg . Wherein the micro-fertilizer is copper sulfate, magnesium sulfate, zinc sulfate, ferrous sulfate, boric acid, and its weight ratio with perlite is 1:1:1:1:1:95.

[0042]The components are uniformly mixed, and the weight of each part is 30 g, and the material is added into a cylindrical m...

Embodiment 3

[0045] Mix waste edible mushroom cultivation base materials, distiller's grains, furfural residues, tea residues, rice bran, and sawdust, pile them up high, dry them naturally to reduce the moisture to 40%-50% (W / W), and then pile them up for maturity. Crush the decomposed organic material with a pulverizer, pass through a fine sieve with an aperture of 5mm, then dry or expose to the sun to reduce the water content to 15%-25% (W / W), and set aside

[0046] Get decomposed organic material 300kg, 3,4-dimethylpyrazole phosphate and urea mixture 250kg (3, the weight content of 4-dimethylpyrazole phosphate is 0.5% of urea weight), monoammonium phosphate 100kg, Potassium chloride 190kg, bentonite 50kg, micro fertilizer and perlite powder mixture 10kg. Wherein the micro-fertilizer is magnesium sulfate, zinc sulfate, ferrous sulfate, boric acid, and its weight ratio with perlite is 1:1:1:1:96.

[0047] Mix the components evenly, put the material into a cylindrical mold of a hydraulic ...

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Abstract

The invention relates to the field of agricultural chemistry, in particular to an organic-inorganic block controlled release fertilizer and a preparation method thereof. In the block controlled release fertilizer provided by the invention, an organic fertilizer and a chemical fertilizer are combined according to a reasonable proportion, a block fertilizer is prepared by using compression equipment, and nutrient release is controlled in combination with an inhibitor, so that the releasing speed of fertilizer nutrients is lowered, and the nutrient utilization ratio is increased. In the invention, an organic fertilizer and an inorganic fertilizer are applied in a combination way, and a novel method for efficiently utilizing industrial and agricultural organic waste and lowering environmental pollution is provided. The organic-inorganic block controlled release fertilizer has a simple preparation process, is convenient to apply, and can be widely applied to agricultural planting and gardening production.

Description

technical field [0001] The invention relates to the field of agricultural chemistry, in particular to an organic-inorganic block-type controlled-release fertilizer and a preparation method thereof. Background technique [0002] Agricultural development is the guarantee of national economic and social development, and fertilizer application is a necessary way to increase agricultural production, income and sustainable development. However, the utilization rate of chemical fertilizers such as conventional nitrogen fertilizer, phosphorus fertilizer, potash fertilizer and compound fertilizer is very low. The utilization rate of nitrogen fertilizer is about 30%, the utilization rate of phosphorus fertilizer is only 16% in the current season, and the utilization rate of potassium fertilizer is 50%-60%. The economic losses caused by nutrient loss amount to tens of billions of yuan every year. Moreover, the loss of nutrients also causes serious environmental pollution, making lakes...

Claims

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Application Information

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IPC IPC(8): C05G3/00C05G3/08C05G3/90
CPCY02P60/21
Inventor 王忠强
Owner NORTHEAST NORMAL UNIVERSITY
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