Biochar slow-release base fertilizer special for sweet potatoes and preparation method thereof

A biochar and slow-release technology, applied in application, fertilization device, fertilizer mixture, etc., can solve problems such as difficulty in increasing fertilizer production, failure to continuously increase grain production, and aggravate fertilizer waste and loss, so as to save planting costs and ensure Sustainable development and the effect of reducing the amount of fertilizer

Inactive Publication Date: 2015-11-04
安徽新天地生物肥业有限公司
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  • Application Information

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Problems solved by technology

In the 1980s, the application of chemical fertilizers contributed about 46.3% to the increase in grain production in my country. The application of fertilizers greatly promoted the production of grain in my country. However, in the 1990s, while the input of chemical fertilizers increased linearly, the grain output According to statistics, from 1996 to 2009, the use of chemical fertilizers in my country increased by 41.2%, while the total grain output only increased by 5.1%. The increasing input of chemical fertilizers did not continue to increase grain output.
Although there is no big gap with the world in terms of traditional chemical fertilizer varieties, the utilization rate of chemical fertilizers is low, especially nitrogen fertilizer, which is 30% lo

Method used

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  • Biochar slow-release base fertilizer special for sweet potatoes and preparation method thereof
  • Biochar slow-release base fertilizer special for sweet potatoes and preparation method thereof

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Embodiment Construction

[0021] A special base fertilizer for biochar slow-release sweet potatoes, comprising a core layer and a coating layer covering the surface of the core layer, wherein the core layer is mixed with the following components in weight (kg): crop waste 70, rice koji Mold 0.7, furfural residue 7, pepper seed 3, clay 14, urea 18, calcium magnesium phosphate fertilizer 20, diammonium phosphate 35, potassium chloride 23, ferrous sulfate 3, chelated iron 2, biological charcoal powder 88, fertilizer additives 0.3, the weight of the core layer is 55% of the total weight of the slow-release fertilizer, the coating layer is a mixture of biochar powder and modified attapulgite, and the weight of the coating layer is 45 of the total weight of the slow-release fertilizer %;

[0022] Among them, the preparation method of modified attapulgite: calcinate the attapulgite at 250°C for 2-3 hours, take it out, and soak it in dilute sulfuric acid containing 45% by weight of the attapulgite for 35 minutes,...

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Abstract

The invention provides a biochar slow-release base fertilizer special for sweet potatoes. The biochar slow-release base fertilizer comprises a core layer and a coating layer coating the surface of the core layer. The core layer is formed by mixing of the following components by weight part: 60-80 of crop waste, 0.5-1.0 of Aspergillus oryzae, 6-8 of furfural residue, 2-4 of chili seed, 10-15 of clay, 15-20 of urea, 18-22 of calcium magnesium phosphate fertilizer, 30-40 of diammonium phosphate, 20-25 of potassium chloride, 2-4 of ferrous sulfate, 1-2 of chelated iron, 80-90 of biochar powder, and 0.2-0.4 of a fertilizer additive. The weight of the core layer accounts for 50%-60% of the total weight of the slow-release fertilizer. The coating layer is a mixture of biochar powder and a binder, and the weight of the coating layer accounts for 40%-50% of the total weight of the slow-release fertilizer. The nutrients of the fertilizer provided by the invention are slowly released under control, one-time fertilization can meet the demand of crops for fertilizer in the whole growth period, fertilizer consumption is reduced, and sweet potato yield is increased.

Description

Technical field [0001] The invention relates to the field of agricultural fertilizers, in particular to a biochar slow-released sweet potato special base fertilizer and a preparation method thereof. Background technique [0002] Chemical fertilizer is the material guarantee for sustainable agricultural development and the material basis for increasing grain production. In the 1980s, the application of chemical fertilizers contributed about 46.3% to the increase in my country’s grain production. The application of fertilizers greatly promoted my country’s grain production. However, in the 1990s, while chemical fertilizer input increased linearly, grain output However, according to statistics, between 1996 and 2009, the use of chemical fertilizers in my country increased by 41.2%, while total grain output only increased by 5.1%. The increasing input of chemical fertilizers did not continue to increase grain output. An important reason for this phenomenon is that the reduction in fe...

Claims

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Application Information

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IPC IPC(8): C05G3/00C05G3/04C05G3/80
Inventor 周立冬周国礼朱顺山
Owner 安徽新天地生物肥业有限公司
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