Special fertilizer for green rice production and preparation and application methods thereof

A special fertilizer and rice technology, which is applied in the field of special fertilizer for green rice production and its preparation and application, can solve the problems of uncoordinated nutrient release rate and release ratio, nutrient stress, and short fertilizer effect period, so as to improve the quality of rice grain and improve the quality of rice. Yield, effects of loss control

Active Publication Date: 2011-06-29
SHENYANG INST OF APPLIED ECOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the production and cultivation of one-season rice in Northeast China, ordinary fertilizers have a short period of effectiveness, and the release of nutrients in fertilizers, especially nitrogen nutrients, is inconsistent with the demand for nutrients in different growth stages of rice. Due to the inconsistency between the release rate and release ratio of nutrients, the

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The fertilizer is composed of urea-based nitrogen fertilizer, phosphorus fertilizer, potassium fertilizer, medium elements and trace elements. The urea-based nitrogen fertilizer is calculated by the amount of urea pure nitrogen: ordinary large urea (particle size 2.5-3.5mm) ( Shanxi Lanhua brand large granular urea), slow-release urea accounting for 15% of the pure nitrogen content of urea, polymer-coated urea (produced by Shandong Jinzhengda Company) with a release period of 60-75 days accounting for 40% of the pure nitrogen content of urea, Composition of polymer-coated urea (produced by Shandong Jinzhengda Company) with a release period of 75-100 days with 25% of the pure nitrogen content and polymer-coated urea with a release period of 100-120 days with 15% of the pure nitrogen content of urea;

[0018] Phosphate fertilizer dosage in P 2 o 5 Calculated, it is 50% of the pure nitrogen in urine-based nitrogen fertilizer; the amount of potassium fertilizer is expresse...

Embodiment 2

[0023] The fertilizer is composed of urea-based nitrogen fertilizer, phosphorus fertilizer, potassium fertilizer, medium elements and trace elements. The urea-based nitrogen fertilizer is calculated by the amount of urea pure nitrogen: ordinary large urea (particle size 2.5-3.5mm), which accounts for 10% of urea pure nitrogen, Slow-release urea accounting for 25% of the pure nitrogen content of urea, polymer-coated urea with a release period of 60-75 days accounting for 30% of the pure nitrogen content of the urea, polymer-coated urea with a release period of 75-100 days accounting for 25% of the pure nitrogen content of the urea The urea composition of urea and the sulfur coating (membrane) with a release period of 100-120 days accounting for 10% of the pure nitrogen content of urea;

[0024] Phosphate fertilizer dosage in P 2 o 5Calculated, it is 60% calcium superphosphate of pure nitrogen in urine-based nitrogen fertilizer; the amount of potassium fertilizer is expressed i...

Embodiment 3

[0029] The fertilizer is composed of urea-based nitrogen fertilizer, phosphate fertilizer, potassium fertilizer, medium elements and trace elements. The urea-based nitrogen fertilizer is calculated by the amount of urea pure nitrogen: ordinary large urea (particle size 2.5-3.5mm) ( Nitrogen in the added monoammonium phosphate is replaced), polypeptide urea accounting for 22% of the pure nitrogen content of urea, polymer-coated urea accounting for 40% of the pure nitrogen content of urea with a release period of 60-75 days, accounting for 15% of the pure nitrogen content of urea The polymer urea of ​​75-100 day release period of % and the urea composition of the polymer coating (membrane) of 100-120 day release period accounting for 15% of urea pure nitrogen amount;

[0030] Phosphate fertilizer dosage in P 2 o 5 Calculated, it is 70% of the pure nitrogen content in the urine-based nitrogen fertilizer, and the phosphate fertilizer is selected from monoammonium phosphate and su...

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Abstract

The invention relates to green rice cultivation production, in particular to a special fertilizer for green rice production, and preparation and application methods thereof. The fertilizer consists of urea-based nitrogen fertilizer, phosphorus fertilizer, potash fertilizer, medium elements and micro elements, and is prepared by the following steps: selecting solid fertilizer raw materials which may be solid particles or powder, adding the medium elements into humic acid or a humic acid salt in an amount which is 60 to 100 percent based on the mass of the medium elements, mixing, adding the micro elements, mixing and granulating by using a binder; and mixing the granulated medium and micro elements with the urea-based nitrogen fertilizer, phosphorus fertilizer and potash fertilizer. The rice fertilizer is applied once before the transplantation of rice as a base fertilizer, and top application is not required in the growth period of the rice. In the fertilizer provided by the invention, the amount and proportion in different release periods of the urea-based nitrogen fertilizer are determined in strict accordance with the nitrogen fertilizer demand characteristic of rice in different growth periods to form a five-stage supply speed for fertilizer nitrogen, and thus, the loss of nitrogen fertilizer is controlled obviously.

Description

technical field [0001] The invention relates to the cultivation and production of green rice, in particular to a special fertilizer for green rice production and its preparation and application method. Background technique [0002] Ordinary fertilizers have a short period of effectiveness, unreasonable nutrient distribution ratio, unscientific and unbalanced nutrient supply, especially the contradiction of nitrogen fertilizer is more prominent. At present, the overall utilization rate of nitrogen is only 30-35%. Nitrogen leaching, volatilization, surface runoff and other losses are relatively large, and the economic benefits of fertilizer application are low, resulting in a huge waste of resources and an increase in agricultural production costs. Pollution of groundwater and soil non-point sources, causing greenhouse gas effect and eutrophication of water bodies, deteriorating the ecological environment. Extensive application of fertilizers and low utilization rates degrade...

Claims

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Application Information

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IPC IPC(8): C05G3/08A01G16/00A01C21/00A01G22/22C05G3/90
Inventor 李东坡武志杰
Owner SHENYANG INST OF APPLIED ECOLOGY - CHINESE ACAD OF SCI
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