Quick-acting punching nano-emulsion for preventing and treating pine wood nematode disease and application of quick-acting punching nano-emulsion

Abstract

The invention discloses a quick-acting punching nano-emulsion for preventing and treating pine wood nematode diseases and application of the quick-acting punching nano-emulsion. The quick-acting perforated nano-emulsion comprises the following components in percentage by mass: 0.5-10% of nematicidal agent; 0.5-10% of a longhorn beetle killing agent; 0.1-5% of a plant growth regulator; 5-15% of an emulsifier; 0.5-5% of a cosolvent; 0.2-2% of a permeation conduction agent; 10-15% of water; and the balance of a solvent. According to the invention, the nano-emulsion is selected for punching the trunk of the pine tree, the punching season is a pine tree resin exuberant season (May-July), the nano-emulsion is combined with the tree body gummosis after being injected, and the active ingredients are rapidly conducted to the whole body of the tree body along with the gum through the nano-size emulsion, the lipophilic drug-loading system and the permeation conducting agent, so that the effective components can be rapidly and rapidly transferred to the whole body of the tree body. Bursaphelenchus xylophilus can be quickly prevented from being infected downwards from tree crowns, and the bursaphelenchus xylophilus cannot be blocked by rosin in the peak gummosis season. The pesticide contains three effective components, namely the nematicide, the longhorn beetle killing agent and the plant growth regulator, and has very obvious effects on killing pine wood nematodes, killing longhorn beetle larvae and recovering the health condition of pine trees.

Description

technical field [0001] The invention relates to a quick-acting perforated nanoemulsion for the prevention and treatment of pine wilt nematode and an application thereof, belonging to the technical field of pesticides. Background technique [0002] Pine wood nematode disease is called "cancer" of pine trees. It is a major national ecological disaster and the most dangerous and destructive disease in the global forest ecosystem. It is extremely diffuse and destructive. The technology of punching and injecting medicine was formed in the early 20th century. In the United States, France, Romania, and South Korea, acephate, dimethoate, phosphamide and other agents were used to inject medicine into tree trunks to prevent and control cone flies, leaf rollers, black pine scale insects, Gall midges have achieved good control effect. The third generation injection agent for controlling pine wood nematode developed in Japan has made great progress, if successful, it will promote the co...

AI Technical Summary

Problems solved by technology

[0004] There are many difficulties in the application of punching and injection technology in the prevention and treatment of pine wood nematode disease. For example, the pine tree has thick skin and dense xylem, so it is difficult for the liquid to penetrate; and Pinaceae plants have strong oil secretion. Whether the penetration and conduction inside the body is efficient directly affects the control effect of pine wood nematode

[0005] The solvents selected for the current punching agents for the prevention and control of pine wood nematode disease are polar solvents such as DMF and DMSO, which have good emulsifying properties, but this kind of drug-loading system is difficult to be compatible with pine resin, and it is very easy to cause phytotoxicity

The perforating agents of the polar solvent system need to be sprayed in winter and early spring to prevent the strong flow of rosin in summer and block the agent bottle. However, the slow flow of rosin in winter and early spring will also make it difficult for the agent to conduct upward in the tree, resulting Loss of medicine

In winter and early spring, it is difficult to distinguish the serious areas and target trees of the year. During this period, it is easy to cause mistakes in target selection, resulting in waste of medicines.

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