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Liquid slow releasing compound fertilizer

A technology of compound fertilizer and production method, which is applied in fertilizer mixture, fertilization device, application and other directions, can solve the problems of low utilization rate of nutrients, inability to guarantee nutrient supply, and difficulty in supplementary application with water, etc., and achieves improved utilization rate, good water and fertilizer Conditions, the effect of a sudden increase in the diffusion rate

Inactive Publication Date: 2006-10-04
BAIYIN CITY TECH DEV SERVICE CENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the shortcomings of the traditional fertilization methods in arid areas, such as the low utilization rate of nutrients, the inability to guarantee the supply of nutrients due to water shortage and water loss in the soil, and the difficulty in replenishing phosphorus and potassium fertilizers with water, the present invention proposes a A kind of production method of liquid slow-release compound fertilizer

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Add 5.0Kg of pure N and P to 1 ton of clear water 2 o 5 2.5Kg, K 2 O 1.2kg, its raw material is respectively, urea, industrial pure potassium dihydrogen phosphate and potassium sulfate. After stirring to make it completely dissolved, slowly add 1Kg of sodium polyacrylate under stirring conditions, and then stop for 2.5 hours, during which six times of stirring were carried out, and the stirring time was 1-2 minutes each time. After the preparation process is completed, topdress the potato roots with a shovel. The topdressing period is the early stage of tuber expansion, the topdressing amount is 400-500ml per plant, the topdressing position is 15cm away from the main stem, and the topdressing depth is 20cm. The effect of topdressing appeared after about 40 hours. It was characterized by the gradual darkening of the leaf surface. After about ten days, the ability to withstand high temperature and sunlight was improved. After about twenty days, the gap in plant growth...

Embodiment 2

[0025] Add water-soluble fertilizer in 1 ton of clear water, the added raw material, proportioning and method are identical with embodiment 1. After the preparation of the liquid fertilizer is completed, slowly add polyacrylamide under stirring condition, the addition amount is 2.5Kg, and the parking time and stirring method are the same as in Example 1. When the proportion of flowable liquid is close to or less than 50% (the remainder is the water polo absorbed by the slow-release agent in 3-5 mm), the topdressing method can be carried out at the crop root system by the topdressing method described in Example 1. apply. The changes in the growth of crops after topdressing the liquid slow-release compound fertilizer and the difference with the control crops are the same as in Example 1.

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Abstract

The delay-released liquid fertilizer consists of water soluble compounds of N, P, K, Fe, ZN, Mn, etc. as well as sodium polyacrylate, polyactylamide or other polymer material. It contains nutritious elements and rich water, and has high diffusion resistance in soil of retaining in the applied position reaching the delay-releasing effect. The present invention raises the utilization of nutritious elements and has outstanding comprehensive of multiple-component nutritious elements. The present invention is favorable to improving alkaline soil, increasing greatly the yield of crops and raising the commodity rate of agricultural product, and has wide application range.

Description

technical field [0001] The invention relates to a production method of liquid slow-release compound fertilizer in the field of agriculture. Background technique [0002] Drought, especially the "stuck neck drought" in the critical period of crop growth has formed a serious obstacle to the development of rural planting in Northwest my country. This is especially reflected in areas where the annual precipitation is less than 300mm. [0003] Many fertilization methods that are well established in irrigated areas cannot be used in arid areas due to lack of water. During the critical period of crop growth, due to the lack of fertilizer and water, the normal development and growth of crops are restricted, so that dry farming still cannot get rid of the passive situation of rain-fed agriculture that depends on the weather. Contents of the invention [0004] In order to overcome the shortcomings of the traditional fertilization methods in arid areas, such as the low utilization ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/00C08L33/26
Inventor 宋宝兴刘建睿宁荣昌杨成荫程登喜于国燕
Owner BAIYIN CITY TECH DEV SERVICE CENT
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