Pollution-free control of orchid diseases and insect pests and control of common physiological diseases of orchids

It has existed since ancient times, and it is not uncommon in modern times. The pollution-free control of orchid diseases and insect pests has the characteristics of effective, low cost, easy to obtain materials, no side effects and so on. Here are some folk recipes spread among the people.

First, tea bran, tea bran, is the residue left after the tea seed is pressed for oil, which is often used by farmers to wash clothes. Tea bran contains saponins and glycosides, which has a good control effect on insect pests. Prevention and control methods: 1. The powdered tea bran and boiling water were soaked in 1:5 for one day and one night, and the orchid basin was drenched with it. At the same time, the place where the orchid pot was placed and other orchid pots were drenched, which had a good control effect on snails. two。 Spraying orchid plants with tea bran water has a good control effect on aphids and red spiders, up to more than 90%.

2. Odorous vegetables (green onion, garlic, leek, ginger, onion, etc.)

Odorous vegetables have their own peculiar smell, and their odors can play a role in insecticidal and sterilization. Prevention and control methods: 1. Take 25 grams of garlic, mash and squeeze juice, dilute it in 10 liters of water, spray orchid plant immediately, and cure aphids, red spiders, shell insects and Botrytis cinerea. The peeled garlic was pressed into small pieces and placed on the orchid topsoil at equal distances. Earthworms and ants disappeared after a few days. two。 The chopped green onions and water were soaked in the proportion of 1:30 for one day and then filtered, and the orchid plants were sprayed with them for several times a day for several days, which had a good effect on the control of aphids, soft pests and powdery mildew. 3. Use 500 grams of ginger, add 250 grams of water, mash the juice, add 3 kilograms of water for every 500 grams of juice, and spray orchid plants to control aphids. 4. The black spot can be cured by mixing leek juice and clear water at the ratio of 1:60 and spraying orchid plants twice a day for several days. 5. Take 15 grams of chopped onion bulbs, soak them in 1 kg of water for 7 hours and then filter them. Spraying orchid plants with filtrate can cure red spiders and aphids.

Third, tobacco butts contain about 3% nicotine. Nicotine has a strong contact killing effect on pests. 20 cigarette butts and one part of quicklime are stirred and filtered with water, then 30 parts of water are added and sprayed with orchid plant, basin soil and basin bottom to eliminate ants and other waxless pests.

Detergent detergent can dissolve the cornea of the shell worm and at the same time form a layer of foam to wrap it around the worm, causing the shell worm to suffocate to death. Washing powder solution can control some diseases and insect pests. Control method: dissolve laundry powder with a small amount of warm water, then dilute it to 1000 times with water, and spray orchid plant to kill aphids, whitefly and red spider. Diluted to 600 times, sprayed once every 3 days, and sprayed 3 times in a row, all the scale insects died. The orchid plant was sprayed with washing powder solution, and after the pest died, the leaves must be washed with clean water several times.

Fifth, the liquor will be mixed with liquor and water at the ratio of 1:2, and the orchid plant will be sprayed once a week for 3 times in a row, which can kill the scale insects.

Sixth, the citrus peel put the citrus peel at the bottom of the basin, which can prevent ants and other pests from entering the basin soil to harm orchids. Citrus peel can also be cut into pieces, scattered on the surface of the basin soil, not watered for a few days, can treat aphids, shell insects and so on. (source: China Flower Daily)