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Water holding controlled release fertilizer special for tobacco and method for producing the same

A water control and fertilizer technology, applied in the directions of inorganic fertilizers, nitrate fertilizers, fertilizer mixtures, etc., can solve the problems that the function of water-retaining agents is difficult to fully exert, and there is no technology for combining water-retention with fertilizers and controlled release in tobacco leaf production, so as to reduce farmland. Pollution and water pollution, reducing fertilizer fixation and leaching, and improving the effect of ecological environment

Inactive Publication Date: 2009-02-18
ZHENGZHOU TOBACCO RES INST OF CNTC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, although there are patents on tobacco-specific controlled-release fertilizers and water-retaining compound fertilizers, there is no technology for combining water-retaining and fertilizer-controlled release for tobacco leaf production, and the existing technologies still have uneven granulation and water-retaining agent functions. Defects such as difficulty in fully exploiting

Method used

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  • Water holding controlled release fertilizer special for tobacco and method for producing the same
  • Water holding controlled release fertilizer special for tobacco and method for producing the same
  • Water holding controlled release fertilizer special for tobacco and method for producing the same

Examples

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Effect test

Embodiment 1

[0033] Firstly, the above-mentioned raw materials (not including sand grains) were pulverized into powder (through a 60-mesh sieve); 2.93% of the sand grains between 18-mesh sieves and 24-mesh sieves were weighed by weight percentage, put into a granulation tray, and 4.4 % Binder A granulation; Weigh 11.74% potassium sulfate, mix with 2.93% Binder A and 2.93% Binder B, gradually add to the granulation pan, wrap around the core granules to form the first layer Fertilizer wrapping layer: Weigh 11.74% potassium nitrate, mix with 2.93% binder A and 2.93% binder B, gradually add to the granulation pan after mixing, and wrap it outside the first layer of fertilizer wrapping layer to form the second Layer fertilizer coating layer; weigh 11.74% diammonium phosphate, mix it with 5.87% binder A, gradually add it to the granulation pan, and wrap it outside the second layer of fertilizer coating layer to form the third layer of fertilizer coating layer; weigh Take 3.12% zinc sulfate and 0...

Embodiment 2

[0035] First above-mentioned raw material (not including grain of sand) is pulverized into powder respectively (passes 60 mesh sieves); The sand grain 3.04% that crosses 18 mesh~24 mesh sieves is put into granulation tray by weight percentage, and then Add 4.56% binder A to the granulation pan for granulation; weigh 12.16% potassium sulfate, mix it with 3.04% binder A and 3.04% binder B, and gradually add it to the granulation pan after mixing, and wrap it in the core Extragranular, forming the first layer of fertilizer coating layer; weigh 12.16% potassium nitrate, mix with 3.04% binder A and 3.04% binder B, gradually add to the granulation pan after mixing, wrap in the first layer of fertilizer Outside the wrapping layer, a second layer of fertilizer wrapping layer is formed; 12.16% diammonium phosphate is weighed, mixed with 6.08% binder A, gradually added to the granulation pan, and wrapped outside the second layer of fertilizer wrapping layer to form the second layer of fe...

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Abstract

A water-holding controlled release fertilizer for tobacco exclusively and a preparation method thereof are provided. The water-holding controlled release fertilizer includes the following materials by the weight percentage: 2 percent to 4 percent of sand grains, 10 percent to 14 percent of lemery, 10 percent to 14 percent of potassium nitrate, 10 percent to 14 percent of diammonium phosphate, 22 percent to 26 percent of cake fertilizer, 0 percent to 4 percent of zinc sulfate, 0 percent to 0.4 percent of sodium molybdate, 20 percent to 24 percent of adhesive A, 10 percent to 14 percent of adhesive B and 1 percent to 3 percent of water retention agent. The invention adopts the method that the water retention agent is at the outmost layer so that the water retention layer absorbs water at first. The water retention layer does not contact chemical fertilizer directly. The influence of the chemical fertilizer on the absorbing effect of the water retention agent is reduced. At the same time, according to the balanced fertilization principle of cured tobacco, the kind and the quantity of the deficient element of tobacco soil is supplemented. Hereby, the compound fertilizer especially for cured tobacco of the invention is designed and manufactured. By fixing the grain diameter of a core, nutrition dissolution property is changed by fertilizer enwrapping method in order to control the release of potash fertilizer effectively. Moreover, the water retention agent absorbs water, which consequently realizes the dynamic equilibrium of fertilizer release and plant absorption.

Description

technical field [0001] The invention relates to a tobacco fertilizer and a production method thereof, in particular to a special moisture-retaining and controlled-release fertilizer for tobacco and a preparation method thereof. Background technique [0002] China's per capita water consumption is only 1 / 4 of the world's per capita water volume, and water resources are unevenly distributed. 80% of the water resources are concentrated in the Yangtze River and the areas south of it. The north is an arid and semi-arid area, and the per capita water resources are less than 1 / 4 of the national average. The lack of water resources makes water saving and drought resistance an important task in agricultural production. Plastic film mulching technology has been widely used in soil moisture conservation, but it also brings "white pollution" while improving soil water use efficiency. Based on the above reasons, water-retaining agent, as a water-retaining material that can save water a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05D1/02C05C5/02C05B7/00C05D9/02
Inventor 王广山尹启生张艳玲王信民蔡宪杰薛超群奚家勤顿松阳孙永军赵健
Owner ZHENGZHOU TOBACCO RES INST OF CNTC
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