This selection selected Angelica dahurica, Veratrum dahuricum Loes.f and Ambrosia artemisiifolia L. for the raw material,study the control effect and security of their crude extracts to Hyphantria cunea and Cytospora chrysosperma (Pers.) Fr. Which are more common and have serious harm on the forestry.
Using soxhlet extraction and ultrasonic extraction methods, extract the insecticidal and antibacterial active compounds of test plants, these two methods are simple and effective, and it is easy ...