Understand the cultivation techniques of edible fungi, flowers infected with red spiders how to do? How to prevent red spiders

Red spider species are many, small in size, often red, mostly occurs in high temperature and dry environment. Almost all flowers are damaged, like in the flower plant on the net, under the net to absorb juice, the affected leaves withered after falling off.

Red spider reproduction speed is very fast, a year can reproduce about 10 generations. Red spider body is extremely small, it uses piercing suction mouthparts inserted into the mesophyll and stem skin of flowers, sucking the juice of flowers. Therefore, only by selecting some suitable pesticides and adopting ingenious control methods, can better control effect be achieved.

The basic control methods are as follows:

(1) household pesticides or five catties boiled pepper spray kill.

(2) Increase air humidity.

The bug is small, less than 1 mm, round or oval, orange or reddish-brown. Because the small body is not easy to be found, once it is found to be harmful, the flowers are often more seriously affected. This insect harm way is to pierce the flower leaves with mouthparts to suck the juice, so that the chlorophyll of the flowers is destroyed, the leaves present gray yellow spots or patches, the leaves become yellow, or even fall off.

Red spiders have a strong reproductive ability, and can reproduce one generation as soon as about 5 days. This insect likes high temperature and drought environment, therefore, in the high temperature and drought climate conditions, its rapid reproduction, serious damage. Insects swarm on the back of flower leaves and spin silk nets to harm. In addition to crawling, wind, rain and operation are also important transmission routes for red spiders.

To prevent red spiders harm, usually should pay attention to observe flowers, flowers found abnormal leaf color, should carefully check the leaf back. When individual leaves are damaged, the insect leaves can be removed; when more leaves are damaged, spraying should be carried out as soon as possible. Commonly used pesticides are acarbide, dicofol, dimethoate, flower insects net, speed kill Ding and so on. For family flower cultivation, a flower sprayer can be prepared. In 400 ml of water, drop 4 drops of paracetamol or mefenacet or Huachongjing (equivalent to 2000 times solution), or 8 drops of dicofol or dimethoate (equivalent to 1000 times solution). Shake well after adding the medicine and spray immediately. Spray requirements uniform, thoughtful, especially to pay attention to spray good leaf back. When spraying, it is best to move the potted plants outdoors. If spraying indoors, do not approach food or utensils. After each use, pour out the excess liquid and wash the sprayer with clean water.

Plant control can be done by washing plants with cold water or by using plant pesticides.

8g pyrethrum is soaked in 50g alcohol to form stock solution in 15 days. Before use, 6 parts of stock solution and 1 part of diluted soap solution are added to 20 parts of water and mixed evenly. Or soak 600g fresh or 300g dry potato stems and leaves in water for 4 hours, filter and spray the affected plants, but some plants cannot be controlled with this solution, such as cacti and velvety plants. You can also use turpentine and garlic juice gas to kill red spiders and aphids, that is, the diseased plants are arranged around a small dish containing turpentine or garlic juice, wrapped in plastic film, after 3 hours, washed with water, so repeated several times.

You can also try:

1. Tomato leaf liquid: mash fresh tomato leaves, add 2-3 times of water, soak for 6-7 hours or so, filter with fine gauze and spray plants to prevent red spiders and aphids.

2. Citrus peel liquid: break citrus peel into small pieces, soak in water for about 10 times for 24 hours, spray plants after filtration, and control leaf miner, red spider, aphid, etc.

3. Chives liquid: 100 grams of leek mashed after adding 1000 grams of water, filtered after spraying plants, can control aphids, rust and so on.

4. Onion head liquid: 3-4 onion heads are smashed and then added with 15 times of water, soaked for about 24 hours, filtered and sprayed on the plants once a day for three consecutive times, which can prevent leaf miners, red spiders, aphids, etc.

5. Ginger liquid: 10 grams of ginger will be smashed and then added to 20 times of water soaked for about 12 hours, filtered after spraying plants, can prevent leaf spot disease, rot disease, coal pollution disease, as well as leaf miner, red spider and so on.

6. Chili liquid: 50 grams of fresh pepper (or dried pepper) will be smashed and then added to 20 times of water, soaked for 5-6 hours after filtering and spraying plants, can effectively control aphids, red spiders, earth worms and so on.

7. Pepper liquid: 100g pepper added to 1000g water decocted into 500g stock solution standby, 5-7 times water spraying plants when applied, can control aphids, red spiders, whitefly and so on.

Chili water treatment flower red spider method

This method is also more common, flowers appear red spider disease, can be used to boil pepper water spray to eliminate. The effect is also very good, the raw materials are convenient, and they are generally available at home.

However, it should be noted that all these methods should pay attention to less dosage, not too much dosage, step by step, spray a few times red spider natural removal clean, too hasty but adverse to flowers!

Tobacco leaves can also be soaked in water, control the right amount, and adopt spraying methods to treat them.

There are also:

1. Flower shops sell drugs that specifically kill red spiders.

2) Keep your flowers fresh.

3, with cigarette butts and orange peel soaked in water, spray every day, a week later can cure