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Preparation method of special slow-release fertilizer for camellia

A slow-release fertilizer and camellia technology, applied in the direction of nitrogen fertilizer, phosphate fertilizer, application, etc., can solve the problems of agricultural product quality decline, low fertilizer utilization rate, and increased production cost, and achieve the effects of improving freshness, improving soil, and saving labor costs

Inactive Publication Date: 2018-09-04
金华市众鑫农业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the fertilizer used for camellia is general fertilizer, and the utilization rate of fertilizer is low. Excessive input of chemical fertilizer not only increases the production cost, but also causes a series of problems such as the decline of agricultural product quality and serious environmental pollution. Therefore, an environment-friendly fertilization method is sought. Technology and formula are urgent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The preparation method of special slow-release fertilizer for camellia comprises preparation of polyuret, preparation of polyuret slow-release fertilizer, preparation of slow-release fertilizer, and its specific steps are:

[0016] 1) Polyuret preparation: Pour dipropyl carbonate into the reaction kettle and heat up to 50°C, then add urea, potassium tert-butoxide and 2-chloroaniline, and then introduce CO 2 React at a pressure of 1.2MPa and a temperature of 130°C for 5 hours, stir and cool to room temperature, and filter to obtain polyuret. The molar ratio of the above-mentioned urea to dipropyl carbonate is 1:1. In this reaction, CO 2 And trace moisture acts as a catalyst, promotes the reaction, uses urea to indirectly chemically fix carbon dioxide, and reduces the greenhouse gas CO in the atmosphere 2 It is a kind of green synthesis process. Polyuret is a polyamide formed by linking urea molecules with carbonyl groups. It is a polyamide formed by connecting multiple a...

Embodiment 2

[0023] The preparation method of special slow-release fertilizer for camellia comprises preparation of polyuret, preparation of polyuret slow-release fertilizer, preparation of slow-release fertilizer, and its specific steps are:

[0024] 1) Polyuret preparation: Pour dipropyl carbonate into the reaction kettle and heat up to 50°C, then add urea, potassium tert-butoxide and 2-chloroaniline, and then introduce CO 2 React at a pressure of 0.8 MPa and a temperature of 140°C for 4 hours, stir and cool to room temperature, and filter to obtain polyuret. The molar ratio of the above urea to dipropyl carbonate is 2:1;

[0025] 2) Preparation of polyuret slow-release fertilizer: add dipotassium hydrogen phosphate to polyuret at a weight ratio of 1.1:1, stir and react at 80°C for 4 hours, and cool to obtain a binary intercalation of polyuret and potassium dihydrogen phosphate Segment copolymer, polyuret slow-release fertilizer;

[0026] 3) Preparation of slow-release fertilizer: Take ...

Embodiment 3

[0031] The preparation method of special slow-release fertilizer for camellia comprises preparation of polyuret, preparation of polyuret slow-release fertilizer, preparation of slow-release fertilizer, and its specific steps are:

[0032] 1) Polyuret preparation: Pour dipropyl carbonate into the reaction kettle and heat up to 50°C, then add urea, potassium tert-butoxide and 2-chloroaniline, and then introduce CO 2 React at a pressure of 1.0 MPa and a temperature of 135°C for 4.5 hours, stir and cool to room temperature, and filter to obtain polyuret. The molar ratio of the above urea to dipropyl carbonate is 1.5:1;

[0033] 2) Preparation of polyuret slow-release fertilizer: add dipotassium hydrogen phosphate to polyuret at a weight ratio of 1.15:1, stir and react at 78°C for 5 hours, and cool to obtain a binary intercalation of polyuret and potassium dihydrogen phosphate Segment copolymer, polyuret slow-release fertilizer;

[0034] 3) Preparation of slow-release fertilizer: ...

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PUM

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Abstract

The invention discloses a preparation method of special slow-release fertilizer for camellia. The preparation method comprises adding urea, potassium t-butoxide and 2-chloroaniline into dipropyl carbonate, carrying out a melting reaction process, stirring and cooling the product to the room temperature, filtering the product to obtain polyurea, adding dipotassium hydrogen phosphate into polyurea,stirring the mixture to obtain polyurea slow-release fertilizer, uniformly mixing the polyurea slow-release fertilizer, cottonseed meal humic acid, cottonseed meal amino acid, multi-element micro-fertilizer and a binder, and preparing particles and powder in a conventional dosage form so that the slow-release fertilizer is obtained. The slow-release fertilizer can slowly release nutrients, improvethe effective utilization ratio of nutrients such as nitrogen, phosphorus and potassium, alleviate environmental problems, improve soil, degrade toxic substances, prevent camellia diseases, improve the vividness of camellia, delays the flowering period of camellia, and has the high yield of slow release fertilizer.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to a preparation method for special slow-release fertilizers for camellias. Background technique [0002] Camellia, also known as Camellia, is an evergreen shrub and small tree in the family Theaceae. The ancient name sea pomegranate. There are aliases such as Yuminghua, Naidong or Datura, and it is divided into Huadong Camellia, Sichuan Camellia and Late Camellia. There are many varieties of Camellia, and it is a traditional ornamental flower in China. It ranks seventh in the "Top Ten Famous Flowers" and is also one of the world's most valuable flowers and trees. Distributed in Chongqing, Zhejiang, Sichuan, Jiangxi and Shandong, and also in Japan and the Korean Peninsula. Camellia is an evergreen broad-leaved shrub or small tree. Branches yellow-brown, branchlets green or green-purple to purple-brown. Leaf blades are leathery, alternate, elliptic, oblong, ovate to obovate,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/04C05G3/00C05G3/80
CPCC05B15/00C05G3/00C05G3/80C05C11/00C05D9/02C05F11/02
Inventor 方钰凌
Owner 金华市众鑫农业科技有限公司