Biochar slow release fertilizer special for tobacco planting
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A technology of biochar, special fertilizer, applied in application, fertilization device, fertilizer mixture, etc.
Active Publication Date: 2015-09-23
HENAN AGRICULTURAL UNIVERSITY +1
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Therefore, biochar has been widely used in the fields of spinach, soybean, rice, corn, potato and other crops, but in the field of tobacco cultivation, there is a lack of research on the application of biochar
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Embodiment 1
[0022] A biochar slow-release special fertilizer for tobacco planting, the weight percentage of each component is: biochar: 65%, special compound fertilizer for tobacco: 25%, heavy calcium: 4%, potassium sulfate: 5%, and the balance is micro-fertilizer , The micro fertilizer is a mixture of manganese sulfate, ammonium molybdate, ferrous sulfate and copper sulfate.
[0023] Yunyan 87 was used for experiments. The nitrogen, phosphorus, and potassium contents of the tobacco-specific compound fertilizer are respectively: N-P-K=10-10-20, and contain various trace elements.
[0024] Biochar was prepared from wheat straw at 400-500°C for 12 hours in low oxygen and continuous carbonization. Basic physical and chemical properties of biochar: specific surface area 16.71 m 2 / g, bulk density 0.21 g / cm 3 , pH 9.15, carbon content 524.1 g / kg, total nitrogen 2.30 g / kg, phosphorus 6.5 g / kg, potassium 9.87 g / kg.
[0025] The application rate of the present invention is 150kg / mu, of which 7...
Embodiment 2
[0027] Repeat Example 1, with the following differences, the percentages by weight of each component are: biochar: 70%, special compound fertilizer for tobacco: 17%, heavy calcium: 5%, potassium sulfate: 7%, and the balance is micro-fertilizer.
Embodiment 3
[0029] Repeat Example 1, with the following differences, the percentages by weight of each component are: biochar: 72%, special compound fertilizer for tobacco: 10%, heavy calcium: 7%, potassium sulfate: 10%, and the balance is micro-fertilizer.
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Abstract
The invention relates to biochar slow release fertilizer special for tobacco planting. The biochar slow release fertilizer special for tobacco planting comprises, by weight percentage, the components of biochar 65%-85%, special compound fertilizer for tobacco 5%-25%, heavy calcium 2%-8%, potassium sulphate 2%-10% and the balance micro element fertilizer. According to the biochar slow release fertilizer special for tobacco planting, the biochar serves as a basis, the soil carbon nitrogen ratio is improved and the soil organic matter content is increased through the biochar, the nitrogen usage amount is controlled by the special compound fertilizer for the tobacco, the insufficient of the P and K elements is supplemented by the heavy calcium and the potassium sulphate, and therefore the purposes of improving the tobacco field soil environment, the carbon nitrogen ratio of the tobacco field soil, the tobacco fertilizer utilization ratio and the tobacco quality and increasing the yield are finally achieved.
Description
Technical field: [0001] The invention belongs to the technical field of tobacco planting, and in particular relates to a biochar slow-release special fertilizer for tobacco planting. Background technique: [0002] At present, the chemical fertilizers used in the tobacco planting process are mainly special fertilizers for tobacco planting, or simple compound fertilizers. Due to the long-term and large-scale application of chemical fertilizers in my country's tobacco fields, the content of soil organic matter and the ratio of carbon to nitrogen in the soil have decreased, and the degree of soil porosity and The permeability becomes poor, and the physical and chemical properties and biological characteristics of the soil gradually deteriorate. Therefore, under the current mode of high input and high output in agriculture, soil mineral nutrients are consumed in large quantities, resulting in nutritional imbalance in tobacco fields and a decline in fertilization benefits, which h...
Claims
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