A kind of fast-acting perforated nanoemulsion for the prevention and treatment of pine wood nematode and its application

Abstract

The invention discloses a quick-acting perforated nano-emulsion for the prevention and treatment of pine wood nematode and its application. The mass percentage composition of the quick-acting perforated nano-emulsion is as follows: nematicidal agent 0.5-10%; beetle killing agent 0.5-10%; plant growth regulator 0.1-5%; emulsifier 5-15%; cosolvent 0.5-10% 5%; osmotic conductive agent 0.2-2%; water 10-15%; the balance of solvent. In the present invention, nano-emulsion is selected for pine tree trunk perforation. The perforation season is in the peak season of pine resin (May-July). The osmotic conduction agent quickly transmits the active ingredients to the whole body of the tree along with the gum, which can quickly prevent the pine wood nematode from infecting the tree crown downward, and will not be blocked by the rosin in the peak season. The invention contains nematicides, beetles and plant growth regulators, and has obvious effects on killing pine wood nematodes, killing longhorn larvae and restoring the health 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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