For damage caused mainly by bridge-building, one can use 2.5% of trichlorfon powder or 2% of carbaryl powder to spray 4~5 kg, which is very effective for larvae below the third instar; secondly, 50% can be used to kill pine. Or 50% malathion 150 ~ 200 mg overdose spray, the killing efficiency of all age larvae are high. In addition to agricultural control and physical control methods, the use of 4.5% beta cypermethrin EC 1500 times, or 0.3% oxymatrine IV No. IV 800 times, per mu Spray 40 ~ 50 kg, the second available 48% Le Siben (chlorpyrifos) EC, 30-40 ml per acre, or 5% Rui Jin Su suspension agent, 30 ml per mu, respectively, watered 60 to 80 kg spray. Due to people's concerns about health, plant products from natural sources have also received widespread attention. Natural plant tea cuts are products made by direct shearing, crushing, and other physical processing of pure plants. The product retains all the original characteristics of the plant, and the properties of the product are better packaged and can be easily transported to different places. Organic Plant Slice,Plant Cut,Plant Tbc,Angelica Root Slice Amazy Organic Biotech Co.,Ltd , https://www.amazyorganic.com
At the same time, the active ingredients of the product are not damaged. It is widely used in functional tea and other fields. Common products are: astragalus cut, burdock cut,etc.