How to control soybean red spider?

What harm does red spider have to soybean? How to control soybean red spider? Also ask experienced netizens to help introduce the harm and control methods of red spiders to soybeans, which are listed below for netizens' reference. The harm of red spider to soybean: soybean red spider is cinnabar spider mite, which can occur in the whole growth period of soybean. Adult mites and nymph mites gather on the back of leaves to form a web and suck leaf juice. Yellow and white spots appeared on the front of soybean leaves at the initial stage of injury, and after 3-5 days, the spots expanded and became dense, the leaves appeared reddish brown spots, local or even all curled, scorched and turned yellow or reddish brown, deciduous leaves and even light culms, and the whole plant died in severe cases. The soybean plots with more nitrogen fertilizer were heavy. When there is lack of food, there is a habit of migration, and the damage peak occurs from July to August, and the plots with many weeds or poor plant growth occur more seriously. The duration of drought is very beneficial to the reproduction of red spiders, and the damage is the most serious. When the relative humidity is more than 70%, it is not conducive to the occurrence of red spiders, and the low temperature, rainy and windy weather is disadvantageous to the reproduction of red spiders. The control methods of red spider: first, apply sufficient base fertilizer, increase phosphorus and potassium fertilizer, do not remove fertilizer in the later stage, remove weeds in time, drought and timely irrigation, conditional flood-drought rotation, can reduce the disease. Method 2. When spot tablets occur and the rate of soybean leaf rolls is 10%, the drug should be used immediately to control aphids. Combined with the prevention and control of aphids, you can choose 73% mijing 3000 times or 40% diclofenac 1000 times or 25% paracetamate EC 3000 times or 20% acarine EC 2000 times, spray 2-3 times in a row. Add 1% spray under drought conditions, plant spray auxiliaries Xiaobao, Xindebao and so on. Method 3. Organic soybeans can be sprayed with 1.8% avermectin EC, 0.3% azadirachtin EC 1500-2000 times, or 2.5% Huaguangmycin 400600 times, bionic pesticide 1.8% Nongke mite EC 2000 times. Under drought conditions, add 1% botanical spray aids such as Xiaobao, Xindebao and so on. Click to get more soybean planting technology click to get more grain and oil crop planting technology