Special controlled release fertilizer for rice and preparation method thereof
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A controlled-release fertilizer and rice technology, which is applied in the fields of application, potassium fertilizer, nitrogen fertilizer, etc., can solve the problems that the controlled release cannot be achieved, and fertilizer nutrients can only be released slowly, so as to achieve reasonable nutrient distribution ratio, good yield increase effect, and fertilizer The effect of high utilization
Active Publication Date: 2008-05-14
湖北力康农生态工程有限公司
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[0004] At present, the research on special controlled-release fertilizers for rice in my country has just started, and the existing few reports are only in the research and experiment stage, and are m
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Embodiment 1
[0046] Special controlled-release fertilizer for rice, total nutrient: nitrogen, phosphorus pentoxide, and potassium oxide content are 25%, 4%, and 16% respectively, all of which are percentages by mass. The raw material components are as follows:
[0055] Put the above-mentioned raw materials together into a blender and stir for 8 to 10 minutes, and mix well to get the product. Then the mixed fertilizer is sent to the metering and packaging machine for metering and packaging.
Embodiment 2
[0057] Special controlled-release fertilizer for rice, total nutrient: nitrogen, phosphorus pentoxide and potassium oxide content are 20%, 5% and 20% respectively, all are percentages by mass. The raw material components are as follows:
[0064] The preparation method is the same as in Example 1.
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Abstract
The invention relates to a special controlled release fertilizer and preparation method for rice, belonging to technical field of slow release and controlled release fertilizer. The invention is characterized in that the invention remix accurately the 5% and 6% of thermoplastic resin membrane urea, the sulfur membrane urea with the potassium chloride compound fertilizer, the potassium chloride and the zinc sulfate according to fertilizer requirement of the rice to form the special formulation of controlled release fertilizer for rice. The invention has the advantages that the nutrient release law of the controlled release fertilizer is matched with the nutrient absorption law of the rice, the controlled release fertilizer costs can be decreased, furthermore, after fertilizing once the controlled release fertilizer before transplanting of rice, no supplementary fertilizer is needed, the labor intensity and worker costs of farmer can be also reduced.
Description
technical field [0001] The invention relates to a special controlled-release fertilizer for crops compounded with coated sulfur and coated thermoplastic resin, in particular to a special controlled-release fertilizer for rice and a manufacturing method thereof, belonging to the technical field of slow / controlled release fertilizers. Background technique [0002] Rice is one of the two most important food crops in the world. About half of the world's population takes rice as a staple food. According to the statistics of the United Nations in 2002, the global rice cultivation area reached 150 million hectares, with a total output of 576.28 million tons. It accounts for 28.4% of the world's total grain production. Although the cultivated area is second to that of wheat, its total output exceeds that of wheat, ranking first in total grain output. [0003] Rice lives in flooded soil. Nitrogen chemical fertilizers applied on the soil surface of paddy fields, except for a part tra...
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