A long-acting solid perforated granule for the prevention and treatment of pine wood nematode and its application

Abstract

The invention discloses a novel long-acting solid perforated granule for preventing and treating pine wood nematode and its application. The mass percentage composition of the long-acting solid perforated granules: 0.5-10% of nematicides; 0.5-10% of beetle-killing agents; 0.1-5% of plant growth regulators; 0.5-5% of wetting agents; 0.5-5%; penetration agent 0.2-2%; the rest of the carrier filler, the carrier filler is a compound of γ-cyclodextrin and organic bentonite. The present invention selects solid granules to punch holes in pine tree trunks, uses γ-cyclodextrin as a carrier filler, and coats the drug in the molecular holes of γ-cyclodextrin to play the role of sustained release and long-term effect. The perforating season of the long-acting solid perforating granule of the present invention is in the vigorous season of pine tree resin (May-June). The whole body of the tree; the present invention has very obvious effects on the killing of pine wood nematodes, the killing of beetle larvae and the restoration of the health of pine trees.

Description

technical field [0001] The invention relates to a long-acting solid perforated granule for the prevention and treatment of pine wood nematode and its application, belonging to the technical field of pesticides. Background technique [0002] In February 2018, the national forest area reached 3.12 billion mu, the forest coverage rate reached 21.66%, and the forest stock volume reached 15.137 billion cubic meters, including forest resources such as the Northeast Greater Khingan Mountains, the Lesser Khingan Mountains, the Northwest Forest Region, and the South Forest Region. However, the disadvantages in forestry production are becoming more and more prominent. According to the latest statistics, there are 6,201 types of forestry pests in China, and the average annual occurrence area in the past two years has exceeded 180 million mu, killing more than 40 million trees and indirect economic losses of 856. billion. Among them, pine wood nematode disease is called "cancer" of pin...

AI Technical Summary

Problems solved by technology

[0005] 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

The punching agent has a short duration of effect, and multiple punching will cause damage to the tree

[0006] The punching agents used to prevent and control pine wood nematode disease all need to be applied in winter and early spring. The purpose is to prevent the strong flow of rosin in summer from blocking the agent bottle. It is difficult to conduct upward in the body, resulting in the loss of medicine

Images