Film coated control release composite fertilizer special for regetables and its making method

A compound fertilizer and compound fertilizer technology, applied in the field of fertilizer preparation, can solve the problems of inability to take into account the release of phosphorus and potassium nutrients, fertilizer loss, waste of manpower, etc., to improve the ability to resist diseases and insect pests, improve water resistance and strength, and reduce the cost of production equipment. Effect

Inactive Publication Date: 2007-07-18
SHENYANG AGRI UNIV
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AI Technical Summary

Problems solved by technology

[0003] However, at present, due to the excessive use of common chemical fertilizers in the cultivation of vegetables in our country, the nitrate content in the plants is seriously exceeded, which seriously endangers human health.
Especially vegetables need more nitrogen fertilizers, which are prone to leaching, denitrification, and volatilization loss in the soil, resulting in serious loss of nutrients in fertilizers, extremely low fertilizer utilization rates, and directly causing environmental pollution
In order to improve the utilization rate of fertilizers at home and abroad, the development of coated fertilizers has been carried out one after another. However, the pr

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 0.01 kg of copper sulfate powder and 0.01 kg of zinc sulfate powder are blended with 0.02 kg of carrier material chitosan, and 10 kg of water is added to stir to form a complex, which is left to stand for 24 hours before use. Use 5kg of polyvinyl alcohol, 5kg of ordinary cornstarch, 2.5kg of modifier formaldehyde, 0.5kg of defoamer Tuwen-80, 2.5kg of surfactant glycerin, 0.5kg of water-retaining agent acrylic resin water-absorbing agent, and nitrogen fertilizer inhibitor Put 0.2 kg of nitrogen fertilizer inhibitor hydroquinone HQ and dicyandiamide DCD and 53.76 kg of distilled water into a high-speed mixer, stir at room temperature in the high-speed mixer for 30 minutes, heat to 85-90°C, and continue stirring at a stirring speed of 100r / min. Melt for 30min. Stir and mix the trace element carrier liquid and mucus. Finally, the coating material liquid is transferred to the liquid storage tank connected with the air pump. Sieve the granular compound fertilizer with a sie...

Embodiment 2

[0038] 0.01 kg of copper sulfate powder and 0.01 kg of zinc sulfate powder are blended with 0.02 kg of carrier material chitosan, and 10 kg of water is added to stir to form a complex, which is left to stand for 24 hours before use. Use 5kg of polyvinyl alcohol, 5kg of ordinary cornstarch, 2.5kg of modifier formaldehyde, 0.5kg of defoamer Tuwen-80, 2.5kg of surfactant glycerin, 0.5kg of water-retaining agent acrylic resin water-absorbing agent, and nitrogen fertilizer inhibitor Half of the nitrogen fertilizer inhibitor hydroquinone HQ and dicyandiamide DCD0.1kg and 63.86kg of distilled water were put into a high-speed mixer, stirred at room temperature for 30min in the high-speed mixer, heated to 85-90°C, and continued to stir at a stirring speed of 100r / min. Gelatinization 30min. Stir and mix the trace element carrier liquid and mucus. Finally, the coating material liquid is transferred to the liquid storage tank connected with the air pump. Sieve the granular compound fert...

Embodiment 3

[0040]0.01 kg of copper sulfate powder and 0.01 kg of zinc sulfate powder are blended with 0.02 kg of carrier material chitosan, and 10 kg of water is added to stir to form a complex, which is left to stand for 24 hours before use. Use 5kg of polyvinyl alcohol, 5kg of ordinary cornstarch, 2.5kg of modifier formaldehyde, 0.5kg of defoamer Tuwen-80, 2.5kg of surfactant glycerin, 0.5kg of water-retaining agent acrylic resin water-absorbing agent, and nitrogen fertilizer inhibitor Half of the nitrogen fertilizer inhibitor hydroquinone HQ and dicyandiamide DCD 0.2kg and 53.76kg of distillation are put into a high-speed mixer, stirred at room temperature in the high-speed mixer for 30min, heated to 85-90°C, and continued to stir at a stirring speed of 100r / min. Gelatinization 30min. Stir and mix the trace element carrier liquid and mucus. Finally, the coating material liquid is transferred to the liquid storage tank connected with the air pump. Sieve the granular compound fertiliz...

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PUM

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Abstract

This invention relates to a preparation method of coated controlled release fertilizer for the vegetable, which includes the liquid membrane material synthesis and fertilizer's parcel process. It select natural, environmental protecting and high polymer of polyvinyl alcohol and starch as the main material, by adding modifiers, surfactants, foam remove agent, water-retaining agent, inhibitors and carrier trace elements to made coated liquid material; in particular, simple conditions, add the inorganic mine powder wrapped fertilizer drops, made a environment-friendly, multi-purpose, capsule controlled and slow-release fertilizer that not only can control nutrients releasing, but also can improve soil physical and chemical nature. The efficiency up to 80 ~ 100 days, one crop fertilizer can meet the nutrient demand of entire reproductive life, and effectively improve the utilization of fertilizers, reducing pollution, saving energy.

Description

technical field [0001] The invention relates to a method for preparing special compound fertilizer for coated and controlled-release vegetables, belonging to the technical field of fertilizer preparation. technical background [0002] Chinese cabbage is one of the traditional vegetable varieties in my country. It is low in price, rich in nutrition, high in yield and easy to preserve. It is widely planted throughout the country and is called "Chinese cabbage". Especially in Northeast China, because of its low price, easy storage, and delicious sauerkraut that can be pickled, it has become one of the main vegetables for people to live through the winter. [0003] But at present, due to the excessive use of common chemical fertilizers in the cultivation of vegetables in our country, the nitrate content in plants is seriously exceeded, which seriously endangers human health. Especially vegetables need more nitrogen fertilizers, which are prone to leaching, denitrification, and ...

Claims

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Application Information

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IPC IPC(8): C05G3/00
Inventor 韩晓日牟林王岩刘晓虎杨劲峰战秀梅于成广付时丰张芳
Owner SHENYANG AGRI UNIV
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