Preparing method for chitin copper-lactate gray-mold preventing and treating preparation

Abstract

The invention discloses a preparing method for a chitin copper-lactate gray-mold preventing and treating preparation. Materials for the preparing method for the chitin copper-lactate gray-mold preventing and treating preparation are prepared from 80% of plant lactic acid bacterium liquid, 15% of chitin and 5% of nanometer complexing monovalent copper. The preparing method includes the steps that 1, tender leaves of towel gourds are collected to be mixed with brown sugar in the ratio of 2:1, the mixture is placed into a fermentation kettle to be fermented for 7 d, and a suspension obtained after filtering is the plant lactic acid bacterium liquid; 2, the nanometer complexing monovalent copper is slowly put into the suspension obtained in the step 1 till the suspension gets into a cyan color; 3, the chitin is further put into the liquid obtained after the step 2 is completed, stirring is carried out, then standing is carried out for 24 d, and obtained viscous fluid is the chitin copper-lactate gray-mold preventing and treating preparation. When used, the chitin copper-lactate gray-mold preventing and treating preparation is diluted by 500 folds to be sprayed to leaves and fruits of plants, active enzymes of pathogens are damaged, and the gray-mold inhibiting effective rate is 93%.

Description

technical field [0001] The invention relates to a preparation method of a chitin copper lactate gray mold control agent, which belongs to the technical field of agricultural biological plant disease control. Background technique [0002] Botrytis cinerea is a fungal disease that is common and difficult to control in open field and greenhouse cultivation. The pathogen of gray mold is Botrytis cinerea, which likes to grow in low temperature and high humidity environment. When the temperature is 20-30℃, In an environment where the humidity continues to be 90%, it is the high incidence period of the disease. The flowers, fruits, leaves, and stems of the plant can all be infected. After the infection, the fruit grows white, and a thick gray mold layer grows behind it, causing the fruit to be water-rotted. Botrytis cinerea is a typical airborne disease, which can be transmitted with airflow, irrigation or agricultural operations, and the transmission speed is fast. If it is not pr...

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Problems solved by technology

[0002] Botrytis cinerea is a fungal disease that is common and difficult to control in open field and greenhouse cultivation. The pathogen of gray mold is Botrytis cinerea, which likes to grow in low temperature and high humidity environment. When the temperature is 20-30℃, In an environment where the humidity continues to be 90%, it is the high incidence period of the disease. The flowers, fruits, leaves, and stems of the plant can all be infected. After the infection, the fruit grows white, and a thick gray mold layer grows behind it, causing the fruit to be water-rotted. Botrytis cinerea is a typical airborne disease, which can be transmitted with airflow, irrigation or agricultural operations, and the transmission speed is fast. If it is not prevented and treated in time, it will infect the whole garden within 3 days, resulting in a failure of harvest. Botrytis cinerea is practically In the prevention and control of diseases, it is difficult to effectively and completely cut off the source of infection, and it is also difficult to completely eliminate the pathogenic bacteria in the case of pathogen invasion. At present, under the actual planting operation, fumigation and spraying methods are generally adopted for the prevention and treatment of Botrytis cinerea The two are used in parallel, and the drugs used are procymidone, chlorothalonil, iprodione, polyastatimethanil and other pesticides for prevention and control. Although the use of the above-mentioned pesticides can be used for prevention and control, the residual pathogens can be controlled under appropriate conditions. Under certain environmental conditions, the drug can continue to reproduce after the effect of the drug, and the pathogen will develop drug resistance after several generations. The use of pesticides to prevent gray mold, regardless of the method of fumigation or spraying, in actual planting, the pathogen has already become a threat to the current market. Pesticides commonly used in the world are resistant to pesticides, which is more difficult to control, and the use of these pesticides is prone to pesticide residues, land pollution, and damage to soil vitality. It will also cause the quality of the finished fruit to decline

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