Pinus massoniana is an insect of the genus Pinnaceae in the family Lepidoptera Leaf mothaceae, also known as caterpillar. Distributed in China's Qinling Mountains to the provinces south of the Huai River, it is mainly harmful to Masson Pine, but also to Black Pine, Wetland Pine, Torch Pine and so on. Larvae feed on pine needles, when the large occurrence of continuous pine forest in a few days can be eaten away, from a distance to see yellow, scorched black, as if burning, often called "smokeless forest fire", the victim of the pine forest light affect the growth, heavy cause pine trees to die. After the harm, it is easy to attract the invasion of dried borer pests such as pine ink cattle and pine pit cut-off small beetles, resulting in large-scale death of pine trees.
When there is a large area of harm, the 1% avermectin microcapsule suspension agent of 60ml/mu can be used for aircraft application for prevention and control, and the prevention and control effect is good.
The 1% avermectin microcapsule suspension agent uses water as the solvent and biodegradable material as the cyst skin, and uses microcapsule technology to coat the active ingredient to isolate the influence of external air, sunlight, water, etc., effectively prolonging the effectiveness of the active ingredient. It has overcome the key technologies of traditional biological preparations such as photolysis and rapid oxidation, made major breakthroughs in the development of microencapsulation wall materials and solvent screening, and microencapsulation of biological pesticides, achieved the goal of effectively controlling insect pests and ensuring the safety of the ecological environment, in line with the policy requirements of the national development of green environmental protection pesticides, and the research results have reached the international advanced level of similar research, and won the first prize of the former Heilongjiang Provincial Forestry Department's Scientific and Technological Progress Award in 2012 and the second prize of the Heilongjiang Provincial Government's Scientific and Technological Progress Award in 2017.