Garlic has a medicinal function and it does not cause diseases. Therefore, it is rarely known. This is well known. However, garlic can only inhibit the occurrence of certain diseases, but it can not suppress the harm of pests. For pests such as aphids, fly species, thrips, leaf miners and other pests, they should be carefully controlled to ensure the quality of garlic and improve the cultivation benefits: The locusts that mainly damage garlic are: radish sprouts, cotton aphid, peach aphid, and vegetable aphid, which are yellow, green, yellow-green, and cherry red. When temperatures are high, they will continue to breed and damage. Because the insect can suck juice, it can cause the garlic leaf to curl up and deform, and it is seriously damaged. The garlic leaf is dead. Control methods 1, with 50% anti-in Wei Wei WP 10-18 grams per mu, spray 40 to 50 kg of water. 2. Spray with 40% Leshi EC 1000~1500 times. 3. Spray with 20% Fenvalerate EC 3000 times. Second, seed fly species fly, also known as the earthworms. The main pests are garlic and onion flies. The two fly species are similar in morphology. The larvae are milky yellow dragonflies with a body length of 0.7-0.9 cm and 7 pairs of fleshy processes on the tail. The larvae damage the bulbs of garlic in the ground, causing the garlic tissues to ulcerate gradually. The heart leaves yellow due to the loss of nutrient supply, and the entire plant is dead. Prevention and control methods 1. For fields where pods have already occurred, apply various types of manure for topdressing organic compound fertilizers or multiple compound fertilizers when topdressing. 2, with 90% crystals of trichlorfon 1000 times spray, found dead place, can be used to prevent roots. 3, drainage and irrigation convenient place, can be continuous irrigation 2 or 3 times, 24 hours each time, so that the ground suffocation and death, rapid drainage after irrigation. Third, Hummer horses that damage garlic are mostly green onions, often in warm and dry seasons. 6 to 10 generations every year. Adults and nymphs are small, light yellow or dark brown. Generally sucking sap on the leaves and leaves of garlic, leaves the color fading and photosynthesis blocked. Garlic, which is dominated by garlic, has the greatest damage. Control method 1, with 40% Dimethoate 1000 ~ 2000 times spray, 50 kg per 667 square meters of liquid medication. 2, with 20% fenvalerate, 10 to 25 ml per 667 square meters of liquid, spray 50 kg of water. Fourth, subspecies of leafminer flies occurs four generations a year, and larvae or pupae live in the leaves of host plants overwintering. The larvae resemble tubular worms, mostly in autumn and in April of the following year. After the larvae infiltrate into the leaves, they erode the leaves, causing the gray curved curved stalks to appear on the leaves, which seriously impedes the growth and development of garlic. Prevention and control methods 1. Remove the residual garlic residues from the field and apply it to the ground to reduce the spread of insects. 2. Spray with 40% Dimethoate 3000x or 80% Dichlorvos 2000x. 3, the use of high-performance biological pesticides without residue, that is, 2% Sua Wai WP, 50-60 grams per 667 square meters of the liquid, 50 kg of water spray. 4. Spray with 2.5% deltamethrin or 20% fenvalerate 3000 times.
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