Promote the culture of guolan and spread the knowledge of orchids
The soft jade body is more plump lips, round and muddy like a noble lady. Imagine Yang Fei's favor day, Pingyang song and dance Dew Peach New - www.lanhua8.com You are a good teacher on the lan road!
There are two main aspects of insect harm to orchids, one is to suck the sap of orchid leaves, causing the leaves of orchid seedlings to shrink. Yellowing, drying and even dying. The second is to spread the pathogen virus to harm the orchid strain. Therefore, it is very important to control orchid insect pests. The main pests and mollusks that endanger orchids are as follows.
1． Mesozoans, also known as insects, are mainly parasitic on the leaves, and adults are covered with white or other color secretions (called mesembrans), which are easy to identify. Mosquitoes not only suck the sap of orchids, but also attract diseases and affect photosynthesis. Control method: manual removal of insect body, brush with a brush and then wash with water. Drug prevention and treatment can be sprayed with oxidized leguo and quick-to-make up for killing. Improving ventilation conditions and avoiding high temperatures and humidity can prevent the spread of mesenchymal insects.
2． Thrips Thrips are one of the important pests of orchids. The sap of leaf buds, flower buds and flower buds is sucked by nymphs and adults, which seriously affects the growth of orchid seedlings and flowers, and even causes seedlings. The flowers withered, the petals curled up and dried up. Prevention and control methods: spray with pesticides such as dichlorvos, oxidative fruit, and insecticidal double. Due to the rapid reproduction of thrips, the full blooming period should be insisted on spraying every 10 days to ensure that the orchid leaves bud. Flower buds grow normally.
3． Whitefly Whitefly Whiteflies are small, with white waxy powder all over the body, often gathering on the back of the leaves and sucking up sap, resulting in poor plant growth. Severe cases wither and die, and cause disease infection. Prevention and control methods: whitefly multiply quickly, and should be sprayed with pesticides such as malathion, cypermethrin, and dichlorvos in time after discovery.
4． Mites Mites are extremely small, less than 1 mm long, and suck up leaf juice and root juice to spread germs and viruses and harm orchids. Prevention and control methods: spraying of pesticides such as trichlorocarbicide, gram mite, bromoferate, and scavenomide.
5． Slugs, snails Slugs and snails are molluscs, mostly nocturnal, encroaching on orchid shoots and young leaves, and spreading viruses and germs. Prevention and control methods: one is artificial hunting; the other is to use arsenic, enemy insects and bait (bran, grass) to trap and kill; the third is to scatter quicklime to block the passage of snails and slugs.
Photo/Network Submission Email: [email protected]
WeChat search public number "Orchid Bar" can answer your questions about orchids online after paying attention, send the number "8" to buy genuine orchids and orchid supplies, send the number "6" to sell orchids and posts, send the number "1" can make money on behalf of the seller!