What are the control methods of orchid diseases and insect pests?

Compared with other families, orchids have more diseases and insect pests, but few harm orchids. Orchid diseases and insect pests should be mainly prevented and divided into two categories: common diseases and insect pests and common diseases. So, how to control the diseases and insect pests of orchids? The following is a detailed introduction to its pests and diseases and control methods. 1. Common pests of orchids: 1. Scale insects Scale insects are the most common pests on orchids. Wild orchids in nature are often harmed by scale insects. There are many kinds of scale insects, and the most harmful one is scale insects. In addition, there are many kinds of scale insects that can harm orchids. Scale insects mostly occur when orchids are too wet and not ventilated. It ventilates and reduces the humidity of water. Spray with the following drugs to kill, but the shell of the dead scale is still attached to the orchid plant and must be removed manually if necessary. 25% pentathion emulsion, 500 times of water. 20% dimethoate EC with 500-800 times of water; 40% dimethoate EC. Adding 100-500 times of water; 60% dimethoate soluble powder, adding 1OO0-2000 times of water. Spray soap continuously with 150 solution for 2-3 times. 50% trichlorfon 250 times solution. 50% malathion, 800- 1000 times solution. 50% phoxim, with 800- 1000 times solution. 50% 1605EC with 2000-3000 times liquid; For 50%EC of methyl 1605, use 1500-2000 times solution. 90% fluoroacetamide powder, using 1000-l600 times solution. 25% ethion emulsion, 400 times solution. 50% Nilde EC, 500- 1000 times solution. In addition, tobacco stems or garlic can be mashed and washed, which can also play a certain role. 2. Pests such as mites are small mollusks, which are round and have milky white eggs. They lay 1-2 eggs every day, hatch five days later, and develop into adults after 1 week. Common species are: red spider and mite. This pest can be killed with the following drugs: 35% Le Kai powder, diluted 1000 times. Lethal mite wettable powder, diluted 1000 times. Kill mites with 2000 times solution. Dilution of acaricide 1000 times. Dicofol, with 1000 times solution. In addition, acaricide, 1605, malathion and other drugs can also be used. 3. thrips thrips often harm orchid leaves, suck epidermal tissue, and make leaves produce white spots. Besides hurting orchids, they also hurt citrus and some plants of Araceae. Lindane can be used for thrips. 1605? Spray fruits and other drugs. 4. Aphids that harm crops and horticultural flowers will also harm orchids. Aphids are the most common pests, and there are many kinds of aphids, which mostly occur in dry weather. Common ones are: peach aphid, lily aphid, cotton aphid and black aphid. Aphids can be sprayed with drugs such as Tepp, 1605, malathion, lindane, animal phosphorus, omethoate and derris. Besides, there are ants. Slugs and other snails come. Bait can be used to trap and kill, and arsenic can be mixed with bran. Hundreds of enemy insects, etc. Scattered in their frequent places of activity; It can also be wet. Sprinkle quicklime or salt on their hiding places.