Molybdenum-rich special controlled-release fertilizer for leguminous crops, and preparation method and application thereof

A controlled-release fertilizer and leguminous technology, applied in the direction of application, fertilizer mixture, fertilization device, etc., can solve the problems of increased labor, short seed dressing fertilizer effect time, etc., to avoid direct contact, good effectiveness, and reduce fertilization costs Effect

Active Publication Date: 2012-12-19
河南豫邮金大地科技服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these two methods are effective, they also have disadvantages, such as short seed dressing fertilizer effect time, foliar spraying will increase labor, etc.

Method used

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  • Molybdenum-rich special controlled-release fertilizer for leguminous crops, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The molybdenum-rich controlled-release fertilizer for leguminous crops consists of raw materials: 150 kg of molybdenum-containing weathered coal-coated urea, 150 kg of polymer-coated urea, 400 kg of diammonium phosphate, and 300 kg of granular potassium chloride.

[0047]The molybdenum-containing weathered coal-coated urea is obtained by coating granular urea as the core fertilizer according to the prior art, and the coating material is a combination of weathered coal:ammonium molybdate=1:0.10 mass ratio, and the coating material accounts for 1% of the granular urea. The mass ratio of is 5.4wt%;

[0048] The polymer material coated urea is obtained by coating granular urea as the core fertilizer according to the prior art, and the coating material is a combination of recycled polyethylene film resin and recycled polystyrene foam resin in a mass ratio of 1:1 and accounts for The total amount of recycled polyethylene film resin and recycled polystyrene foam resin is compo...

Embodiment 2

[0057] The raw material composition of molybdenum-rich controlled-release fertilizer for leguminous crops is: 100 kg of molybdenum-containing weathered coal-coated urea, 200 kg of polymer-coated urea, 300 kg of diammonium phosphate, and 400 kg of granular potassium chloride.

[0058] Preparation method, the steps are as follows:

[0059] (1) Take 15 kg of weathered coal, add 2.1 kg of ammonium molybdate, and mix evenly to obtain molybdenum-containing weathered coal. Take 3 kg of bisphenol A and 0.36 kg of triethylenetetramine, and mix them uniformly to obtain a binder. Take granular urea with a particle size of 2 to 3 mm, preheat it to 70°C in a drum, and spray the prepared binder onto the rotating urea particles. The mass ratio of the binder to the granular urea is 0.4 wt%, and then spray a layer of molybdenum-containing weathered coal, the mass ratio of molybdenum-containing weathered coal to urea is 2.1wt%, after solidification, repeat the above process twice to obtain mol...

Embodiment 3

[0064] The molybdenum-rich controlled-release fertilizer for leguminous crops consists of raw materials: 200 kg of molybdenum-containing weathered coal-coated urea, 100 kg of polymer-coated urea, 350 kg of diammonium phosphate, and 350 kg of granular potassium chloride.

[0065] Preparation method, the steps are as follows:

[0066] (1) Take 15 kg of weathered coal, add 1.9 kg of ammonium molybdate, and mix evenly to obtain molybdenum-containing weathered coal. Get 3 kilograms of bisphenol A, 0.42 kilograms of triethylenetetramine, mix evenly, get binder; Get the granular urea of ​​particle diameter 2 ~ 3 millimeters, preheat to 65 ℃ in the rotating drum, put the prepared binder Spray onto the rotating urea granules, the mass ratio of the amount of binder to the granular urea is 0.5wt%, and then spray a layer of prepared molybdenum-containing weathered coal, the mass ratio of the amount of molybdenum-containing weathered coal to urea is 2.5% wt%, after curing, repeat the abov...

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Abstract

The invention relates to a molybdenum-rich special controlled-release fertilizer for leguminous crops, and a preparation method and application thereof. The special controlled-release fertilizer for leguminous crops comprises the following raw materials in parts by mass: 100-200 parts of molybdenum-containing weathered coal coated urea, 100-300 parts of high molecular material coated urea, 300-400 parts of diammonium phosphate and 200-400 parts of granular potassium chloride. The invention also provides a preparation method and application method of the molybdenum-rich special controlled-release fertilizer for leguminous crops. According to the special requirements of leguminous crops for nutrient, the nutrient element molybdenum is added into the coating agents; the different coatings are used according to the requirements of leguminous crops for nutrient in different growth and development periods, so that the release of the nutrient can satisfy the absorption in each growth and development period; and field experiments prove that a favorable effect is achieved, and the yield and the quality of crops are obviously increased.

Description

technical field [0001] The invention relates to a special controlled-release fertilizer for leguminous crops rich in molybdenum nutrition and a preparation method and application thereof, belonging to the technical field of production and application of controlled-release fertilizers. Background technique [0002] The roots of leguminous crops can combine with rhizobia to form root nodules, which can fix nitrogen in the air for crops to absorb and utilize. Molybdenum is an essential nutrient element in the process of nitrogen fixation. Applying molybdenum can promote the formation and growth of root nodules in leguminous crops, increase the number and volume of root nodules, increase the amount of nitrogen fixation, and increase crop yield. According to research, the application of molybdenum fertilizer can increase soybean yield by 6-36%, and peanut yield by 5-44%. [0003] The amount of available molybdenum in the soil is affected by the soil parent material on the one h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/08C05G3/90
Inventor 李广涛郇恒星孙涛化百南
Owner 河南豫邮金大地科技服务有限公司
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