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Slow-release compound fertilizer for improving rice quality

A slow-release compound fertilizer and high-quality technology, which is applied in the direction of urea compound fertilizer, calcium fertilizer, nitrogen fertilizer, etc., can solve the problems affecting rice quality, the uncoordinated nutrient release rate and the ratio of fertilizer required, rice growth stress, etc., to increase soil Permeability, good effect of increasing production and quality, and good adsorption effect

Inactive Publication Date: 2018-03-23
芜湖四高农业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Ordinary fertilizers for rice have a short fertilizer effect, 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 of nutrients and the ratio of fertilizer requirements, the fertilizer utilization rate is low, which has a negative impact on rice growth. Nutrient stress releases a large amount of nutrients into the soil when the rice does not need a large amount of nutrients, but there is not enough nutrient supply when the rice requires a large amount of nutrients, which seriously affects the quality of the rice and pollutes the agricultural ecological environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A slow-release compound fertilizer for improving rice quality, its raw materials include: urea compound 60kg, ammonium sulfate 30kg, plant ash 30kg, potassium polyphosphate 35kg, trace element fertilizer 25kg, brassinolide 3kg, peanut oil 4kg, adsorption slow release Agent 13kg, binder 7kg, coating agent 5kg.

[0016] Trace element fertilizers include: EDTA chelated calcium 20kg, EDTA chelated magnesium 4kg, EDTA chelated zinc 2kg, EDTA chelated manganese 3kg. Adsorption slow-release agent includes: fly ash 4kg, coal gangue 8kg. The binder includes: hydroxyethyl cellulose 2kg, gorgon powder 8kg.

[0017] The urea complex is prepared by the following process: mix 30kg urea, 12kg coconut shell fiber, and 80kg sodium hydroxide solution with a concentration of 1.2mol / L, heat up to 45°C and stir for 40min, and use 0.8mol / L hydrochloric acid to adjust the pH value of the system to 5 -5.8, add 14kg chitosan, raise the temperature to 50°C and stir for 8 hours, filter, wash, a...

Embodiment 2

[0019] A slow-release compound fertilizer for improving rice quality, its raw materials include: urea compound 80kg, ammonium sulfate 20kg, plant ash 40kg, potassium polyphosphate 25kg, trace element fertilizer 35kg, brassinolide 2kg, peanut oil 8kg, adsorption slow release Agent 10kg, binder 10kg, coating agent 2kg.

[0020] Trace element fertilizers include: EDTA chelated calcium 30kg, EDTA chelated magnesium 2kg, EDTA chelated zinc 4kg, EDTA chelated manganese 1kg. Adsorption slow release agent includes: fly ash 6kg, coal gangue 4kg. The binder includes: hydroxyethyl cellulose 4kg, gorgon powder 4kg.

[0021] The urea complex is prepared by the following process: mix 50kg urea, 6kg coconut shell fiber, and 120kg sodium hydroxide solution with a concentration of 0.8mol / L, heat up to 55°C and stir for 20min, and use hydrochloric acid with a concentration of 1.6mol / L to adjust the pH value of the system to 5 -5.8, add 6kg chitosan, raise the temperature to 70°C and stir for ...

Embodiment 3

[0023] A slow-release compound fertilizer for improving rice quality, its raw materials include: urea compound 65kg, ammonium sulfate 28kg, plant ash 33kg, potassium polyphosphate 32kg, trace element fertilizer 28kg, brassinolide 2.8kg, peanut oil 5kg, slow absorption Release agent 12kg, binder 8kg, coating agent 4kg.

[0024] Trace element fertilizers include: EDTA chelated calcium 22kg, EDTA chelated magnesium 3.5kg, EDTA chelated zinc 2.5kg, EDTA chelated manganese 2.5kg. Adsorption slow release agent includes: fly ash 4.5kg, coal gangue 7kg. The binder includes: 2.5kg of hydroxyethyl cellulose, 7kg of gorgon powder.

[0025] The urea complex is prepared by the following process: mix 35kg urea, 10kg coconut shell fiber, and 90kg sodium hydroxide solution with a concentration of 1mol / L, heat up to 47°C and stir for 35min, and use hydrochloric acid with a concentration of 1mol / L to adjust the pH value of the system to 5-5.8 , add 12kg chitosan, heat up to 55°C and stir for ...

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Abstract

The invention discloses a slow-release compound fertilizer for improving rice quality. The slow-release compound fertilizer comprises the following raw materials (by weight): 60-80 parts of a urea compound, 20-30 parts of ammonium sulfate, 30-40 parts of plant ash, 25-35 parts of potassium polyphosphates, 25-35 parts of micronutrients fertilizer, 2-3 parts of brassinolide, 4-8 parts of peanut oil,10-13 parts of an adsorption sustained release agent, 7-10 parts of a binder and 2-5 parts of a coating agent. The urea compound is prepared by the following process: mixing urea, coconut fiber and asodium hydroxide solution, warming up and stirring, regulating pH value of the system to 5-5.8, adding chitosan, warming up and stirring, filtering, washing, and drying to obtain the urea compound. The effect of controlled release of fertilizer nutrients can be achieved according to fertilizer requirement characteristics of rice on a nitrogenous fertilizer. In addition, the pollution to the ambient environment can be reduced, and yield increase and quality improvement effects of rice are good. Meanwhile, soil permeability can be increased, and soil can be improved. The slow-release compound fertilizer of the invention is environmentally-friendly and low-cost.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to a slow-release compound fertilizer for improving rice quality. Background technique [0002] Ordinary fertilizers for rice have a short fertilizer effect, 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 of nutrients and the ratio of fertilizer requirements, the fertilizer utilization rate is low, which has a negative impact on rice growth. Nutrient stress releases a large amount of nutrients into the soil when rice does not need a large amount of nutrients, but there is not enough nutrient supply when rice requires a large amount of nutrients, which seriously affects the quality of rice and pollutes the agricultural ecological environment. Contents of the invention [0003] Based on the technical problems existing in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/04C05G3/80
CPCC05B7/00C05G3/00C05G3/20C05G3/80C05G5/30C05C3/00C05C9/00C05D1/00C05D3/00C05D5/00C05D9/02C05F11/00C05F11/10
Inventor 王四高
Owner 芜湖四高农业科技有限公司
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