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Slow-release fertilizer for potatoes

A slow-release fertilizer and potato technology, which is applied to slow-release fertilizers for potatoes. It can solve problems such as influence effect, and achieve the effect of promoting crop growth, long fertilizer effect period and improving nutrient utilization rate.

Inactive Publication Date: 2015-09-09
ZHANGJIAGANG HONGJIA DIGITAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, urease-nitrification inhibitors, like fertilizer nutrients, are also easy to migrate in environmental media, affecting their effects

Method used

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  • Slow-release fertilizer for potatoes

Examples

Experimental program
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Effect test

Embodiment 1

[0019] A kind of potato slow-release fertilizer, the mass parts of described potato slow-release fertilizer are composed as follows: 30 parts of nitrogen, phosphorus and potassium compound fertilizers, 8 parts of potassium fulvic acid, 8 parts of urea phosphate, 2 parts of citric acid, 3 parts of EDTA chelated zinc , Bacillus subtilis 800 million / g, carbamide peroxide-β-cyclodextrin inclusion compound 1.8 parts, release control agent 0.8 parts, water retaining agent 1.2 parts, soil conditioner 6 parts.

[0020] The controlled release agent is selected from octadecyltrimethylammonium chloride modified attapulgite.

[0021] The water retaining agent is a mixture of starch grafted acrylamide and cellulose grafted acrylonitrile, the mass ratio of which is 1:2.4.

[0022] The soil conditioner is selected from biomass coke, and the particle size of the biomass coke is 0.02-0.08cm.

Embodiment 2

[0024] A kind of potato slow-release fertilizer, the mass parts of described potato slow-release fertilizer are composed as follows: 35 parts of nitrogen, phosphorus and potassium compound fertilizers, 9 parts of potassium fulvic acid, 10 parts of urea phosphate, 2.5 parts of citric acid, 4 parts of EDTA chelated zinc , Bacillus subtilis 850 million / g, carbamide peroxide-β-cyclodextrin inclusion compound 2.4 parts, controlled release agent 1.2 parts, water retaining agent 1.5 parts, soil conditioner 7 parts.

[0025] The controlled-release agent selects octadecyltrimethylammonium chloride modified attapulgite, which is made from octadecyltrimethylammonium chloride and attapulgite under ultrasonic conditions, wherein the Ultrasonic conditions were 60 min at 40°C.

[0026] The water-retaining agent is a mixture of starch-grafted acrylamide and cellulose-grafted acrylonitrile, the mass ratio of which is 1:2.8.

[0027] The soil conditioner is selected from biomass coke, and the ...

Embodiment 3

[0029] A kind of potato slow-release fertilizer, the mass parts of described potato slow-release fertilizer is composed as follows: 40 parts of NPK compound fertilizer, 10 parts of potassium fulvic acid, 12 parts of urea phosphate, 3 parts of citric acid, 6 parts of EDTA chelated zinc , Bacillus subtilis 900 million / g, carbamide peroxide-β-cyclodextrin inclusion compound 4 parts, controlled release agent 2.8 parts, water retaining agent 2.4 parts, soil conditioner 10 parts.

[0030] The controlled-release agent is selected from octadecyltrimethylammonium chloride modified attapulgite, which is prepared from octadecyltrimethylammonium chloride and attapulgite under ultrasonic conditions. Wherein the ultrasonic condition is ultrasonic at 48° C. for 45 min.

[0031] The water-retaining agent is a mixture of starch-grafted acrylamide and cellulose-grafted acrylonitrile, the mass ratio of which is 1:3.6.

[0032] The soil conditioner is selected from biomass coke, and the particle...

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Abstract

The invention relates to the technical field of fertilizers, in particular to a slow-release fertilizer for potatoes. The slow-release fertilizer for the potatoes comprises the following components in parts by weight: 30-50 parts of nitrogen-phosphorus-potassium compound fertilizer, 8-12 parts of fulvic acid potassium, 8-15 parts of urea phosphate, 2-4 parts of citric acid, 3-8 parts of EDTA-Zn, 8-10 billion / g of bacillus subtilis, 1.8-6.4 parts of a carbamide peroxide-beta-cyclodextrin inclusion compound, 0.8-4.8 parts of a controlled release agent, 1.2-3.6 parts of a water-retaining agent and 6-12 parts of a soil conditioner. The slow-release fertilizer for the potatoes is long in effective period, loss of fertilizer caused by volatilization and leaching can be greatly reduced, and the limited fertilizer and water can be fully absorbed and utilized by plants to achieve integrated water and fertilizer and improve soil. The slow-release fertilizer provided by the invention has excellent water retention and slow-release performance, the fertilizer element utilization is improved, the environmental pollution is reduced and the crop growth is promoted.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to a slow-release fertilizer for potatoes. Background technique [0002] The existing advanced chemical fertilizers are mainly two categories of slow / controlled release fertilizers and loss control fertilizers. Slow / controlled release fertilizers are fertilizers that slow or control the rate at which nutrients are released. [0003] Among the existing slow / controlled release fertilizers, the urease (or nitrification) inhibitory type has the advantages of simple process, low cost, and environmental protection compared with the coated controlled release fertilizer. It only needs to add a small amount of urease inhibitor or nitrification inhibitory fertilizer to the nitrogen fertilizer. The agent or the complex of the two can play a sustained release effect. Urease inhibitors can inhibit the hydrolysis rate of urea and reduce the volatilization and nitrification of ammonium nitro...

Claims

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Application Information

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IPC IPC(8): C05G3/04C05G3/00C05G3/80
Inventor 范佳晨徐靖赵维达徐丹徐凯
Owner ZHANGJIAGANG HONGJIA DIGITAL TECH
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