Also known as the white moth, it occurs with the development of greenhouses and greenhouses. Small size, adult body length of 0.9 to 1.4 mm, body pale yellow, wings covered with white wax powder, the overall appearance of white. Larvae are ellipsoidal, flat, yellowish or light green, and have long, irregular wax protrusions on their backs. Adults and larvae are sucked on the backs of the clusters to make the leaves yellow and wither. Whitefly secretes a lot of honeydew, contaminates the leaves and fruits, and has poor commercial properties. Whitefly occurs in the greenhouse for many generations a year, wintering on greenhouse vegetables, or continuing to harm. On the upper part of the plant, adults and yellow eggs were the most abundant on the young leaves, and there were more larvae on the lower leaves. Most of the lower leaves had more worms and insects, and the distribution of worms was more regular. Adults have strong activity at 25～30°C, and their larvae have poor cold resistance. They are hibernating pests.
Control methods:
Do not purchase eggplant seedlings from whiteflies; yellowishness of adults may be trapped and killed by orange-yellow plates; artificial release of grasshoppers or licorice wasps has better biological control effects. Chemical control: can be used 25% of buprofezin WP 2500 times or 2.5% of deltamethrin EC 2000 to 3000 times, or 40% chrysanthemum EC 2500 times. Spray the plants on the back of the upper leaves. During the period of greenhouse closure, smoke was smoked on the No. 4 series of smoke from Shenyang Agricultural University. The effect was obvious.
Magnetic-guided Intramedullary Nail
Distal hole aiming is a main difficulty in intrameduallary nail operation. Magnetic-guided Intramedullary Nail is designed to solve this problem.The advantages:
1. Real-time monitored during drilling process, 100% accuracy in distal hole drilling.
2. Doesn't need stablizer, decrease one incision for patient. shorter time
3. Doesn't need X-ray in distal hole drilling. Reduce radiation for surgeons.
Magnetic-guided Intramedullary Nail
Magnetic-guided Intramedullary Nail,Gamma Intramedullary Nail,Femur Intramedullary Nail,Elastic Stable Intramedullary Nail
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