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Controlled-release bulk blending fertilizer for complete-quantity fertilizing and clean production of rice, and preparation and application methods

A clean production and application method technology, applied in the direction of fertilization method, fertilization device, fertilizer mixture, etc., can solve the problem of less controlled-release nitrogen fertilizer, etc., and achieve the effects of long release period, less equipment occupation and simple production process

Inactive Publication Date: 2017-09-15
INST OF AGRI RESOURCES & ENVIRONMENT NINGXIA ACAD OF AGRI & FORESTRY SCI NINGXIA KEY LAB OF SOIL & PLANT NUTRITION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are few studies on the application of controlled-release nitrogen fertilizers on field crops in my country, and they are mostly applied to crops with high economic benefits such as lawns, vegetables and fruit trees.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The preparation and application method of the controlled-release blended fertilizer for clean production and full-volume fertilization of rice in the irrigation area of ​​diversion to the Yellow River of the present invention includes the preparation of coated controlled-release nitrogen fertilizer, selection of other fertilizers, production process, reasonable application method and dosage, and specifically includes the following steps:

[0025] A. The manufacturing process of coated controlled-release urea is:

[0026] First, mix 2,4-toluene diisocyanate and p-phenylene diisocyanate in a weight ratio of 3:1 to make a polyurethane coating material, and then make 4% polyurethane coating material, 1% glycerin, 95 % of large-grain urea (particle size 2.8-8.0mm), pour it into the disc granulator, heat it to 40°C-50°C with air blast, rotate at a speed of 40-50rpm for 3-5min, and continue at 40°C-50°C The controlled-release coated urea with a nitrogen content of 44% can be p...

Embodiment 2

[0038] 1. Preparation and application method of special controlled-release blended fertilizer for clean production and full-scale fertilization of rice in the irrigation area of ​​diversion to the Yellow River. The nutrient content (%) of each component and its feeding weight percentage are 26 parts by weight of ordinary urea containing 46% of N and 44% of N. 41 parts by weight of coated controlled-release urea, containing P 2 o 5 13 parts by weight of 46% TSP, containing K 2 O 60% potassium chloride 20 parts by weight, each component material is weighed and proportioned according to the percentage, fully stirred and mixed with a mixer or an intelligent fertilizer distributing machine, and the special controlled-release blended fertilizer for the clean production of rice in the irrigation area of ​​diversion to the Yellow River is obtained. Calculated by weight percentage, the N content of the obtained product is about 29-31% (wherein the controlled-release nitrogen content i...

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Abstract

The invention relates to a controlled-release bulk blending fertilizer for complete-quantity fertilizing and clean production of rice, and preparation and application methods. The controlled-release bulk blending fertilizer is especially applicable to Yellow River irrigation areas, and is characterized by comprising the compositions in parts by weight, 25-27 parts of urea, 40-42 parts of controlled-release coated urea, 12-14 parts of calcium triple superphosphate, and 19-21 parts of potassium chloride. The controlled-release bulk blending fertilizer has the beneficial effects that the fertilizer is prepared according to nutrient demands of crops, requirements for the production technology and equipment are simple and operatability is high; no fixed input is needed, and the controlled-release bulk blending fertilizer is prepared by adding ready-made fertilizer components into the controlled-release coated urea which is simply produced through a pan granulator, and performing physical mixing through a stirrer or an intelligent fertilizer blending machine; the production technology is simple, employed equipment requires less land occupation, and equipment investment is 20-30% of that of common composite fertilizer production equipment.

Description

technical field [0001] The invention relates to a controlled-release blended fertilizer for full-scale fertilization in clean rice production and a preparation and application method, which is especially suitable for application in irrigation areas diverted from the Yellow River. Background technique [0002] The Yellow River Irrigation Area is located in the inland of Northwest my country, with a history of more than 2,000 years of irrigation. It is not only the main grain production area in Northwest China, but also an important commercial grain base in the country. With the development of the economy and the increasing degree of intensification of agricultural production, the one-sided pursuit of high yield has led to a high amount of fertilization for single-season rice planting in the Yellow River irrigation area in recent years. Due to the unique irrigation and drainage system of the Yellow River irrigation area, the proportion of water diverted from farmland to the Ye...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/08A01C21/00C05G3/90
CPCA01C21/005C05B1/02C05G3/90C05G5/37C05C9/00C05D1/02
Inventor 王芳刘汝亮姜彩鸽张爱平赵营洪瑜李友宏纪立冬
Owner INST OF AGRI RESOURCES & ENVIRONMENT NINGXIA ACAD OF AGRI & FORESTRY SCI NINGXIA KEY LAB OF SOIL & PLANT NUTRITION
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