1. Washing powder plus alkali. According to washing powder: 20% caustic solution: water = 1:1:3 (by weight), the three components are uniformly mixed and sprayed to kill aphids, red spiders, scale insects, whitefly and the like. After 24 to 48 hours, the mortality rate of spider mites is between 94% and 98%, and that of other types of pests is around 70%. After killing the pests, the leaves should be cleaned immediately or two or three times. 2. Buckwheat leaves plus chili grass. Take 2 kg of buckwheat leaves and pepper grass, cut into 3 to 5 cm long pots, add 10 to 12 kg of water to boil, add 200 g of garlic and 1 kg of water, continue to boil for 1 hour, then filter, and take the filtrate. Well, when used in accordance with the ratio of 1:3 dilution of the filtrate and water spray, after 24 to 48 hours, the anti-release of L. bracteatum can reach 98.7%, and the other pests have an efficacy of more than 60%. 3. Pepper water. Take 50 grams of dried red pepper, add about 1 kilogram of clear water and boil it for 10 to 20 minutes, and then take the clear liquid after filtration to prevent insects such as aphids, whitefly, and spider mites. 4. Nicotine sulfate. The tobacco leaves are ground to a fine powder, lime milk is added to make it alkaline, and nicotine is liberated. Then kerosene is added for extraction and filtration, and then dilute sulfuric acid is used to rinse out the solution, turn into sulfate, and finally concentrate to an appropriate concentration. Nicotine sulfate. Compatible with 40% nicotine solution diluted 500 times, can be used to treat aphids, spider mites, whitefly, leaf curl insects, stink bugs, thrips, etc., can also kill the eggs of peach fruit borer. 5. Peach leaves boiled water. Take 0.5 kg of peach leaf, add 3 kg of water and cook for 30 minutes. Spray after filtration to prevent and control aphids, ulnar bugs, and soft pests. Peach leaves are dried and researched into powder to be applied to nursery fields. And other underground pests. 6. Tung oil urine. Take 0.5 kg of human urine and 15 kg of tung oil and add 10 kg of water. Stir thoroughly and evenly spray the canopy with a sprayer. Spray it once every 5 to 7 days, and spray it three times. It can effectively control the ulcer disease of orange. 7. Tea seed cake water. The tea seed cake is crushed, soaked in the appropriate amount of boiling water for a day and a night to leach out the saponin and alkaloids in the tea seed cake, filtered and sprayed with water to dilute the spray by 20 to 30 times, which can prevent and treat pests such as grasshoppers, planthoppers and snails. 8. Fresh pine needles and bitter seeds. Take fresh pine needles 3 kilograms short cut and add bitter melon seeds 1 kilogram, add water 6 kilograms boiled for 40 minutes and filtered into the original solution, then add water 40 to 50 kilograms of spray. The control effect on snails harming flowers and trees is up to 97%, and other kinds of pests are above 70%. 9. Castor water. 100 grams of castor bean mash, add 1 kilogram of water soak for 2 to 3 hours, filter, add a small amount of neutral detergent and 6 to 8 kilograms of water, spray evenly to control aphids, leafhoppers, beetles and other pests. The ramie leaf stalk is dried, ground into powder and embedded in soil, which can effectively control termites, cockroaches, ants, cockroaches and other underground pests. 10. Garlic juice. Take 0.5kg of purple skin garlic, add a little water to soak for a while, smash and take sap, dilute with water for 10 times, immediately spray, can control locust, red spider, and nymph nymph; pour garlic juice into basin soil to prevent nematodes of potted flowers , etc. 11. Vinegar solution. Frequent spraying of edible vinegar solution on the flowers can effectively control azalea black spot and rose white blight. It also has certain preventive and therapeutic effects on the downy leaf spot of flowers. (Author: Cao Di Cui Jianjun ring unit: Yuanjiang City, Hunan Province Rural Office)
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