Technique for producing novel bio-agricultural chemical songgang-mycin

Abstract

A novel agricultural chemical-Songgangmycin as a biochemical for preventing and treating the fungal diseases of agricultural crops is prepared from rice through preparing culture medium from rice and the nutritive liquid containing NaCl, KH2PO4, NaNO3 and FeSO4, inoculating the urticaria blue mold to it, culturing, extracting in organic solvent, carboxylation reaction with the cross-linking agent (4-(P-azidosalicylnitro)butylamine), vacuum concentrating to obtain crystal seeds, and dissolving in aqueous solution.

Description

technical field [0001] The invention relates to the technical field of biopesticides, in particular to the preparation technology of biopesticides for crop fungal diseases and insect pests. Background technique [0002] Among plant diseases, fungal diseases are the most diverse, with about 30,000 species, many of which are the most serious. For example, cereal rust is an important worldwide disease. Several or even dozens of fungal diseases can be found on almost every crop. For example, there are more than 200 fungal diseases found on rice, and more than 30 common fungal diseases. Rust, smut, powdery mildew, and downy mildew, which are common to various crops, are caused by fungi. At present, most of the prevention and control of the above diseases still use chemical pesticides, which not only lead to the development of drug resistance of many pathogenic bacteria, but also increase the dosage of pesticides and increase the residual amount; hazards. Therefore, traditional...

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Problems solved by technology

In addition, due to the extensive use of high-residue chemical pesticides, the residues of agricultural and livestock products have seriously exceeded the standard, resulting in blocked exports

[0003] The structure of existing biopesticide varieties is unreasonable, limited to biopesticides, such as Bt, etc., and antibacterial agricultural antibiotics, such as Jinggangmycin, kasugamycin, and agricultural streptomycin, etc., while antifungal biopesticides started very late and are still in development. There are no high-efficiency and broad-spectrum varieties, and they are in the trial stage, such as Zhongshengmycin and Wuyimycin, etc.

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