Rubber controlled release fertilizer and preparation method thereof

A technology of controlled-release fertilizer and fertilization method, which is applied in the direction of fertilization method, fertilization device, fertilizer mixture, etc., can solve the problems of high price of controlled-release fertilizer, reduced economic benefit, uneasy acceptance by farmers, etc. Benefit and avoid the effect of environmental pollution problems

Inactive Publication Date: 2013-09-18
CHINA NAT OFFSHORE OIL CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing controlled-release fertilizers are expensive, and using them on rubber alone will r

Method used

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  • Rubber controlled release fertilizer and preparation method thereof
  • Rubber controlled release fertilizer and preparation method thereof
  • Rubber controlled release fertilizer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Embodiment 1: Rubber controlled-release fertilizer

[0054] Mix the raw materials with a particle size of 2-5 mm according to the following ratio to obtain a rubber controlled-release fertilizer:

[0055]

[0056] The coating amount of the film-forming coated urea with a release period of 180 days is 5.5%;

[0057] The coating amount of the film-forming coated urea in the release period of 60 days was 3.5%.

[0058] In the rubber controlled release fertilizer, the weight ratio of nitrogen, phosphorus pentoxide and potassium oxide is 1:0.4:0.9.

[0059] figure 1 It is the curve diagram of the nutrient release law of the rubber controlled-release fertilizer and the nutrient absorption law of the rubber. The thick line is the nitrogen nutrient release law line of the controlled-release fertilizer, and the thin line is the nitrogen nutrient absorption law curve of the rubber. The abscissa is the growth time of the rubber , and the ordinate is the nitrogen nutrient. I...

Embodiment 2

[0060] Embodiment 2: Rubber controlled release fertilizer

[0061] Mix the raw materials with a particle size of 2-5 mm according to the following ratio to obtain a rubber controlled-release fertilizer:

[0062]

[0063] The coating amount of coated urea in the release period of 120 days is 4.0%;

[0064] The coating amount of coated urea in the release period of 60 days was 3.5%.

[0065] In the rubber controlled-release fertilizer, the weight ratio of nitrogen, phosphorus pentoxide and potassium oxide is 1:0.5:0.8.

Embodiment 3

[0066] Embodiment 3: Rubber controlled release fertilizer

[0067] Mix the raw materials with a particle size of 2-5 mm according to the following ratio to obtain a rubber controlled-release fertilizer:

[0068]

[0069] The coating amount of coated urea with a release period of 180 days is 5.5%;

[0070] The coated urea with a release period of 60 days has a coating content of 3.5%.

[0071] In the rubber controlled-release fertilizer, the weight ratio of nitrogen, phosphorus pentoxide and potassium oxide is 1:0.6:0.9.

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Abstract

The invention discloses a rubber controlled release fertilizer and a preparation method thereof. The controlled release fertilizer is prepared by compounding such ingredients as two kinds of reaction film coated urea with different release stages, urea, diammonium phosphate, potassium chloride and magnesium sulfate,. The special rubber controlled release fertilizer disclosed by the invention only needs to be fertilized once within an annual growth cycle to continuously and synchronously supply nutrients necessary for the rubber, satisfy the demand of the rubber on three elements of nitrogen, phosphorus and potassium in the annual growth period and solve the problem of high cost of singly utilizing the controlled release fertilizer. The rubber controlled release fertilizer has the advantages of obviously improving the fertilization effect, reducing fertilization times, saving work, saving labor, lowering the production cost, improving the economic benefit, while adding trace element magnesium and increasing the dry content of glue.

Description

technical field [0001] The invention belongs to the technical field of slow / controlled release fertilizers, and relates to a rubber controlled release fertilizer and a preparation method thereof. Background technique [0002] Rubber trees are native to the Amazon River Basin. Natural rubber is produced by coagulating and drying the latex that flows out of the rubber tree when it is tapped. Natural rubber is an important strategic material, which plays an important role in guaranteeing the development of my country's national economy. In addition, natural rubber is still a serious shortage product, and nearly 2 / 3 is still imported, which seriously restricts the development of related industries in our country. As the largest demand and import area in the world, China has also assumed greater pressure on economic security while paying a huge cost. According to statistics, in 2011, China's natural rubber planting area reached 1 million hectares, with an annual output of nearl...

Claims

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Application Information

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IPC IPC(8): C05G3/00A01C21/00
Inventor 曲均峰傅送保沈兵付玉娥
Owner CHINA NAT OFFSHORE OIL CORP
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