The secondary metabolite of Alder in Sichuan and Yunnan, p-ethylacetophenone, is a sustained-release agent and method for avoiding Pine beetle

Abstract

Provided are a sustained-release agent and method using Alnus ferdinandi-coburgii secondary metabolite p-phenylethylketone to avoid Pinus yuannanensis pine shoot beetle. P-phenylethylketone solution is prepared using n-hexane or n-pentane or petroleum ether as a solvent and p-phenylethylketone as a solute and is used for providing avoidance for forest stands under different degrees of harm from Pinus yuannanensis pine shoot beetle; the concentration of p-phenylethylketone is positively correlated to the degree of harm to the forest stand from Pinus yuannanensis pine shoot beetle. The application refers to: setting the concentration of the sustained-release agent to 50-500 ng / MuL, putting the agent in sustained-release bottles with the top end opened, hanging the bottles in a crossing manner on weak tree shoots in a tower form according to the direction and tree height. The agent is made from the non-host forest secondary metabolite of Pinus yuannanensis pine shoot beetle, is high in avoiding capacity, long in duration, low in price and environment-friendly, is sustainably useful in controlling the species quantity of Pinus yuannanensis pine shoot beetle and has great popularization potential.

Description

technical field [0001] The invention belongs to the prevention and control of forestry pests, and relates to a drug slow-release agent for preventing and controlling the yunnanensis bark beetle. Background technique [0002] The yunnanensis beetle is a kind of dry beetle characterized by damage to Yunnan pine, such as Tomicus yunnanensis, T.minor, T.brevipilosus, etc. The young beetle, newly emerged adults like to eat healthy pine shoots, which lasts for 8 to 9 months and causes the tree to weaken; after sexual maturity, it chooses the weakened Yunnan pine trunk for feeding, spawning and reproduction, and lasts for 3 to 4 months Eventually the tree dies. However, the bark beetle is affected by non-host odors from the search for hosts to the encounter of male and female individuals, mating, oviposition, and post-embryonic development. It has a high ability to select and identify host plants in forest areas. [0003] Alnus ferdinandi-coburgii Schneid (Alnus ferdinandi-coburg...

AI Technical Summary

Problems solved by technology

However, the composition and active components of the secondary metabolites are not clear at present. Only the compounds in Nepalese alder, Sichuan and Yunnan alder fruits, and alder leaves are seen in the literature, and these compounds are mainly high-molecular secondary metabolites. A relatively complete report on the components of secondary metabolites in Alnus sichuan-yunnan and the analysis of these components

However, alder alder in Sichuan and Yunnan grows at an altitude of 1500-3000m, with a soil layer thickness greater than 80cm, in moist yellow-red or purple soil, and the growth period is at least 5 years, which limits the effectiveness of interplanting trees to prevent damage

Relevant patent documents, such as "Rapid Screening Method for Anti-Pine Bark Beetle Mixed Forest Model (CN201010249717.1)" is a method for cultivating non-host trees to build mixed forests to achieve continuous control of bark beetles, but this method is also limited by non-host trees Natural growth environment and rearing time

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