Rice special controlled-release fertilizer applied once in processes of rice transplantation and seedling culture and preparation method thereof

A technology of controlled-release fertilizer and rice, which is applied in the direction of fertilization device, application, fertilizer mixture, etc., can solve the problems of burning seeds or roots, membrane shell rupture, and inability to combine application, etc., so as to reduce the amount of fertilizer, facilitate root system absorption, and improve The effect of fertilizer use efficiency

Active Publication Date: 2010-10-27
KINGENTA ECOLOGICAL ENG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, their inorganic coating materials and water-based coating materials are prone to rupture of the membrane shell, resulting in the sudden release of nutrients in the membrane. In addition, the formula contains quick-acting chemical fertilizers. If they come into contact with seeds or roots,

Method used

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  • Rice special controlled-release fertilizer applied once in processes of rice transplantation and seedling culture and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Special controlled-release fertilizer for rice, the mass parts of raw material components are as follows:

[0036] Sulfur plus polymer coated urea 26 parts

[0037] 30 parts of sulfur plus polymer coated compound fertilizer

[0038] 6% thermoplastic and thermosetting double-coated urea 15 parts

[0039] Humic acid coated compound fertilizer 25 parts

[0040] Zinc sulfate 4 parts.

[0041] Preparation:

[0042] (1) Preparation of sulfur-added polymer-coated urea and sulfur-added polymer-coated compound fertilizer:

[0043] A, 9 kilograms of novolac epoxy resins and 1 kilogram of triethylenetetramine are mixed, and are mixed with polymer coating agent.

[0044] B, take by weighing 100 kilograms of granular urea of ​​2~3 millimeters in particle diameter, 100 kilograms of granular compound fertilizers of 2~4 millimeters in particle diameter, wrap one deck sulfur earlier respectively by prior art, sulfur membrane material accounts for 20% of nuclear fertilizer quality, ...

Embodiment 2

[0053] Embodiment 2: special controlled-release fertilizer for rice, the mass parts of raw material components are as follows:

[0054] Sulfur plus polymer coated urea 22 parts

[0055] Sulfur plus polymer coated compound fertilizer 25 parts

[0056] 6% thermoplastic and thermosetting double-coated urea 20 parts

[0057] Humic acid coated compound fertilizer 30 parts

[0058] 3 parts zinc sulfate.

[0059] The raw material preparation method is the same as in Example 1.

Embodiment 3

[0060] Embodiment 3: special controlled-release fertilizer for rice, the mass parts of raw material components are as follows:

[0061] Sulfur plus polymer coated urea 30 parts

[0062] 28 parts of sulfur plus polymer coated compound fertilizer

[0063] 6% thermoplastic and thermosetting double-coated urea 18 parts

[0064] Humic acid coated compound fertilizer 22 parts

[0065] Zinc sulfate 2 parts.

[0066] The raw material preparation method is the same as in Example 1.

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Abstract

The invention relates to a rice special controlled-release fertilizer applied once in processes of rice transplantation and seedling culture and a preparation method thereof. The controlled-release fertilizer comprises the following raw materials: urea coated with sulfur and high molecular polymer, compound fertilizer coated with sulfur and high molecular polymer, 6% of thermoplastic and thermosetting double-layer coated urea, compound fertilizer coated with humic acid and zinc sulfate. The preparation method comprises the following steps of: weighing all the raw materials according to the formula, putting the raw materials into a stirrer for stirring and mixing uniformly, metering, and packing. The nutrient release of the controlled-release fertilizer of the invention is matched with the nutrient absorption of rice; the controlled-release fertilizer can not harm seeds when the controlled-release fertilizer is in direct contact with the seeds; the controlled-release fertilizer can be applied to the places near seeds in the processes of the rice transplantation and the seedling culture, can not harm the seeds, and is beneficial to absorption of root systems; and on the basis of ensuring the rice yield, the consumption of the fertilizer can be greatly reduced, and the utilization rate of the fertilizer can be improved.

Description

technical field [0001] The invention relates to a special controlled-release fertilizer for rice, in particular to a special controlled-release fertilizer for rice that does not harm rice seeds and is applied to seedling soil at one time when transplanting seedlings and a preparation method thereof, and belongs to the technical field of controlled-release fertilizer production. Background technique [0002] Rice is one of the most important food crops in my country, and the national rice planting area accounts for about 30% of the food crop area. In recent years, with the introduction of a series of national policies to benefit farmers, the economic benefits of rice production have increased year by year. However, compared with economic crops, the economic benefits of rice cultivation are relatively low, and farmers are unwilling to invest too much labor and time. Simplifying cultivation techniques is the development direction of rice cultivation. At present, my country's r...

Claims

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Application Information

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IPC IPC(8): C05G3/08C05G3/90
Inventor 李广涛陈德清王敏高义武
Owner KINGENTA ECOLOGICAL ENG GRP
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