Cotton swab + alcohol to kill scale insects
Harm
Scale insects are the most common pests encountered by fleshy insects. They begin to break out in early spring. They will suck the sap of stems and leaves, resulting in poor growth of fleshy insects and wither and die in severe cases p>
Location
Scale insects are usually hidden in leaf centers, leaf backs, dead leaves and dense leaf gaps. If they are hidden so deep, it is better to remove them with cotton swabs. The specific methods are as follows:
Elimination method
Prepare 75% medical alcohol, wet it with a cotton swab, and wipe the pest parts hard. After a few minutes, you can see that the body becomes a small point~
If the scale insects are very serious, it is necessary to spray the medicine. Kill them with 800-1000 times the speed of the liquid, and spray them on the damaged parts according to the instructions p>
In addition, I remind you that when changing the soil in the spring, burying a little carbofuran in the soil can play a preventive role, but the effect is only 3 months p>
Red spider killing medicine
Harm
The fleshy of Euphorbiaceae, Compositae and Liliaceae are particularly vulnerable to infection by red spiders. Red spiders will suck the juice from young leaves, and the leaves will slowly grow brown spots and eventually die p>
Location
When you find that the long spots on the leaves are dry, look at the back of the leaves to see if there are spider webs and small red / White / dark insects. If so, it is basically red spider p>
Elimination method
1. First remove the spider web with a cotton swab, and then use folk prescriptions to inhibit its diffusion, such as 50 times dilution of soap liquid with water, 25 times dilution of tobacco liquid with water, 10 times dilution of boiled pepper water with water, etc p>
2. Starscream is a mite. Special drugs are used to completely kill it, such as dicofol, jinmanzhi, aika mite, etc p>
Poor ventilation, whitefly crazy infection
Harm
Bemisia tabaci is mainly caused by poor ventilation. It will suck juice on the back of the leaves, secrete honeydew, bring all kinds of molds, cause the leaves to turn yellow and fall off, and produce black powder and mildew spots p>
Elimination method
1. In the early stage of the disease, we should isolate quickly, otherwise the infection is very serious; Rinse thoroughly with clean water, especially the root, soak in carbendazim medicine bath, ventilate and dry, and then change the soil thoroughly p>
2. If the whitefly has spread to the whole plant, it is recommended to use dimethoate, dilute it 1000 times and spray it. After spraying the medicine for 2 days, use strong water flow to wash away the killed insects together with the black powder p>
Note: wear masks and wash hands in time during the whole operation p>
The toothpick stabbed the aphid
Harm
The fleshy Crassulaceae and Compositae are easy to produce aphids. Aphids will suck the juice of young leaves, resulting in slow growth and weak plants p>
Elimination method
When the number is small, stab the aphids with toothpicks or other sharp tools; The harm is serious. Use imidacloprid and spray it after diluting 1500 times p>
Kill xiaoheifei
Harm
The dark, humid, muggy and airless environment is particularly easy to breed xiaoheifei. Its breeding speed is fast and its flooding is very deadly p>
Xiaoheifei likes to eat fleshy young leaves, rhizomes and seedlings, which will lead to yellowing, decay, weak growth and bacterial infection p>
Elimination method
1. Lure method: put a black light lamp or a yellow insect stained board with a special smell slightly higher than the flowerpot p>
2. Garlic insecticidal: after smashing the garlic, add half a kilogram of blister for an hour, and then spray it on the insect damaged parts. Spray it once every three days for three consecutive times p>
3. Mosquito repellent incense insecticidal: point a section of mosquito repellent incense in the flower pot, cover it with plastic bag or plastic bucket, and seal it for 12 hours. Any insects can be killed p>
4. Spraying: spray with imidacloprid, trichlorfon, flower protection god, etc. once in five days for 3 ~ 4 consecutive times, you can kill larvae and adults. Pay attention to wear a mask and wash your hands with soap after spraying p>