Charcoal-base microbial compound fertilizer and preparation method thereof

Abstract

The invention belongs to the technical field of compound fertilizers. The charcoal-base microbial compound fertilizer is prepared from a microbial compound fertilizer, a coating agent, charcoal and zeolite in a proportion, wherein the microbial compound fertilizer contains a nitrogenous fertilizer, a phosphorus fertilizer, a potassium fertilizer and a nitrogen-fixing microorganism; and the coatingagent contains attapulgite and a polyvinyl alcohol water solution. The invention further discloses a preparation method of the charcoal-base microbial compound fertilizer. The preparation method comprises the steps of putting the microbial compound fertilizer into a coating machine, adding the coating agent, the charcoal and the zeolite, stirring, and drying, so as to obtain the charcoal-base microbial compound fertilizer. The content of the nitrogenous fertilizer, the phosphorus fertilizer, the potassium fertilizer and the nitrogen-fixing microorganism in the charcoal-base microbial compoundfertilizer is relatively high, so that the charcoal-base microbial compound fertilizer has potential application prospects in the regions which are suffered from salinization and are lack of phosphorus; the charcoal-base microbial compound fertilizer contains rich organic elements such as carbon and nitrogen, and the total nutrition content reaches the requirements on the concentration of the fertilizer in the national standards of compound fertilizers; the charcoal-base microbial compound fertilizer has certain slow release effect to nitrogen; and the preparation method is simple in processstep, and existing equipment is easily utilized for production.

Description

technical field [0001] The invention relates to the technical field of compound fertilizers, in particular to a carbon-based microbial compound fertilizer and a preparation method thereof. Background technique [0002] With my country's economic development, population growth and the decrease of arable land year by year, the application of chemical fertilizers has become an important measure to increase food production and deal with food security issues. In 2013, my country's chemical fertilizer application amount reached 59.119 million tons, more than 1 / 3 of the world's total fertilizer use, and the chemical fertilizer application amount per unit sowing area reached 359.1kg / hm 2 , which is 2.5 times the world average. China's total chemical fertilizer application and unit area application are already at the highest level in the world, but the fertilizer utilization rate is low. At present, the nitrogen utilization rate of grain crops in my country is only 30% to 35%, the ...

AI Technical Summary

Problems solved by technology

Extensive application of nitrogen fertilizers in farmland will pollute the groundwater, and excessive fertilizer flowing into the water body with runoff will also cause eutrophication of the water body and destroy the ecological balance

Excessive application of nitrogen fertilizer will increase the emission of greenhouse gases such as nitrogen oxides, aggravate the greenhouse effect, and affect global climate change

Therefore, on the basis of ensuring the output and benefits of agricultural products, it is a key problem in agricultural production to solve the current situation of excessive fertilization, low fertilizer utilization rate, and decline in agricultural product quality and environmental quality by developing new fertilizers and adjusting the fertilization structure.

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