Flowers and trees commonly used pests are: 40% omethoate, 80% dichlorvos, 25% iminophos and so on. This control is not ideal, and it is not safe at the same time. After a few years of exploration, the author successfully discovered the following methods to control pests against flowers and trees, and the effect was remarkable. The common pests are: spider mites that cause the leaves of flowers and trees to die, or even the whole plant to die, and are afraid of the wet environment; the larvae can eat leafflies that are susceptible to black rot under leaf epidermis; they can eat young leaves and young roots at night. Flower snails; parasitized on the privet, Pittosporum, pomegranate, Chinese rose, plum blossoms and other plants that cause the whole plant to die with waxy secretions, strong resistance to scale insects and so on. (1) For the first generation sites with fewer insect populations, it may be necessary to manually clean them with a brush or a bamboo stick and spray them with edible vinegar. For some contiguous dense bamboo trees, shrubs, and hedgerows, rinse with water in due course. Pruning and transplanting can improve ventilation and light transmission, reduce the number of pests and diseases, and protect natural enemies of some pests, such as short-bellied wasps and red-ringed ladybirds, which are good at preying on scale insects. (2) washing powder plus alkali prevention and control method: According to washing powder: 20% of caustic soda: water = 1:1:3 (weight ratio), the three were mixed and sprayed. After 24-48 hours inspection, the mortality rate of spider mites reached 94-98%, and other types of pests also reached 60-70%. (3) Stone sulfur compound control method: it is made of quicklime, sulfur, and water together, and its ratio is 1:2:10 (weight ratio) is strongly alkaline, and it is diluted with water to 50 in winter use. %; spraying in the summer diluted to 25% concentration, control the efficiency of scale insects to 98%. It can also reach 70% in spring. (4) Tartarian buckwheat leaves plus spicy madder control method: Take 2 kg of buckwheat leaves and cilantro and cut 3-5 cm into the pot, add 10-12 kilograms of water to boil, add 200 grams of garlic and 1 kilogram of water , Continue to boil for 1 hour, then filter, take the filtrate sealed, when used according to the filtrate and water into a 1:3 dilution ratio spray, after 24 - 48 hours control effect of leaf fly can reach 98.7%. Other types of pest control efficiency can reach more than 60%. (5) fresh pine needles and bitter gourd seeds prevention and control method: take fresh pine needles 3 kg, cut short and add 1 kg of bitter seeds, add 6 kg of water, boiled for 40 minutes after filtering into the original juice, and then add water 40-50 kg spray, each Spray once every 5-7 days, even spray 3-4 times, the snail control effect up to 97%, other pests also reached 70%. More than a few kinds of soil methods, can be used alone, can also be used in combination, its control effect is good, and less investment, no pollution, is a good method of flower and tree pest control. (Wuxue Meichuan Town Yushan Middle School Zhang Meng Rao Yaoqiong)
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