12' Pvc Coated Gloves,Black Rough Pvc Gloves,12Inch Chemical Resistant Gloves,Pvc Coated Gauntlet Gloves JINAN SHANDE SECURITY TECHNOLOGY CO., LTD , https://www.sdsxlb.com
The spring tapeworm is a kind of pest that causes great harm to the trees. Its biological characteristics are: a generation occurs one year in a year and it is wintering in the soil under the canopy. At the end of February and early March of the following year, when the temperature is about 0 to 10 centimeters deep in the local area, the emergence of the adult begins to emerge. The eggs are seen in the middle and middle of March, and the larvae hatch in early April. After the larvae hatch, the young shoots are taken and the older larvae are fed. When feeding on leaves, the damaged leaves are incompletely incomplete, and the severed leaves are all exposed to light. At this time, the larvae are re-spilled and the winds are transferred to nearby trees. In mid-May, the mature larvae were introduced into the soil and the pupa period reached more than 9 months. According to the biological characteristics of the spring aphid, we can adopt a ring control method: Since the female adult is wingless, after crawling, it is necessary to crawl on the tree to lay eggs, spraying a ring 30 cm at the base of the trunk, when the female adults climb into the tree . Venom configuration: Use pyrethroids and diesel in a ratio of 1:10. Second, the material surrounding the ring prevention and control method: The 30 cm plastic bar was cut into a trapezoid, around the base of the trunk around a week, tighten the lower pine, was inverted bell-shaped, can prevent adults from getting on the tree.