Organic biofertilizer capable of improving heavy metal pollution in soil

Abstract

The invention discloses organic biofertilizer capable of improving heavy metal pollution in soil. The organic biofertilizer is prepared from modified plant straw, animal waste, organic matter, humic acid, charcoal, modified starch, composite microorganic adsorbent and a nitrobacteria inhibitor. The plant straw and the starch are modified, and the capacity for capturing and adsorbing heavy metal ions in the soil of the organic biofertilizer is improved; fresh animal waste is processed to remove hazardous substances in the waste, the nutrition effect on the soil by the waste is enhanced, and secondary pollution to the soil by the hazardous substances is reduced; the organic matter, the humic acid and the composite microorganic adsorbent can improve fertility of the soil. the organic fertilizer is processed through nanotechnology, effective nutrient components are easier to absorb by crops, soil burden is reduced, the coating production mode is adopted, efficiency and slow release can be achieved, the function of soil microbial flora is improved, and the purpose of obtaining the novel efficient organic biofertilizer is achieved.

Description

technical field [0001] The invention belongs to the technical field of fertilizers, in particular to an organic biological fertilizer capable of improving heavy metal pollution in soil. Background technique [0002] China is a large agricultural country, and food security is related to the lifeline of the people. However, in recent years, as the detection rate of heavy metals in crops exceeding the standard has become higher and higher, soil heavy metal pollution has increasingly seriously affected people's daily diet. According to reports, some areas of China The soil is polluted by heavy metals such as cadmium and lead, which makes the cadmium content of the crops growing on it exceed the standard. In addition to the heavy metal pollution sources from the heavy chemical industry, in order to increase the output of crops, the use of fertilizers is essential, but the amount of chemical fertilizers Excessive and abuse lead to serious excess of heavy metals in the soil, which ...

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Problems solved by technology

Although the treatment method has more advantages, it inevitably has disadvantages such as insignificant adsorption effect, high treatment cost, and poor operability. No matter what kind of treatment method, the use of chemical fertilizers is essential to achieve the output of crops in the end. Therefore, an ecological, efficient, and non-polluting organic fertilizer should be sought at the same time of treatment, and the source of soil pollution caused by chemical fertilizers should be solved from the root.