Pests harmful to melon mainly include mantle, centipede, ground tiger, earthworm, leaf miner, yellow slug, aphid, and red spider. (1) Mantle: also known as root or melon. It is a larva of a species fly. About 5 mm in length, shaped like a cricket, jeopardizes the young roots, shoots, and tender stems of the cucumis. The commonly used methods of prevention and control are as follows: 1 The land is cultivated in winter or as early as possible. High ridge cultivation to avoid excessive soil moisture. 2 Fertilizers to be fully decomposed. 3 When sowing or planting, mix 57% phoxim 1kg and 200kg of sauteed wheat bran or green grass and sprinkle it near the seedlings, or water the roots with 2000 times solution to kill eggs and adults. (2) è¼è›„: The common name is 蜊蛄, Lala 蛄. It mainly harms melon seedlings, young stems, seeds sown in soil, etc. Control methods are as follows: 1 Application of compost manure. 2 Use black light or high-intensity fluorescent light to trap adult insects. 3 poison bait trapping. The method is based on the method of control of mantle. (3) Small tiger: Also called silkworm, potato, black silkworm, cutworm. The main damage to the seedlings, the young shoots of the melon seedlings snapped or broken into the hole for food. Lack of seedlings and ridges. Control methods are as follows: 1 Use of composted manure: Remove weeds and reduce adult oviposition sites and food sources. 2 Manual capture. Early in the morning along the broken seedlings along the trace search; also in the field seedling period, piled every few meters piles of grass or vegetables, concentrated in the early morning killing. 3 poison bait trapping. The method is based on the method of control of mantle. (4) Skull: Scarab larvae. The main damage seedlings, bite roots, causing dead seedlings. Control methods are as follows: 1 Application of compost manure. 2 use poison baits to kill. The method is based on the method of control of mantle. 3 Use sweet and sour liquid or black light to trap adult insects. (5) Leafminer: It is a small fly that appears in early spring and is very small in size, only 2-3mm long and silver gray. Adults lay eggs on the leaves of the larvae. The hatched larvae penetrate into the leaves. The green leaves form a curved tunnel. As the growth of the larvae subsides from thin to coarse, the photosynthesis of the seedlings is affected, growth and development are hindered, and the leaves are severely damaged. Withered, causing dead seedlings. The prevention and control methods are as follows: (1) The use of sufficiently mature organic fertilizers to avoid the use of organic fertilizers that have not been decomposed and inducing adults to lay eggs. 2 Occupying the spawning period In the initial stage of hatching, spray pesticides promptly. Pharmaceuticals: 40% Dimethoate EC 1000x, 80% Dichlorvos EC 1000x, 25% Dithiophos EC 1000x, 90% Trichlorfon 1000x, 2.5% Didochlor or KF, 20 % of the speed killing Ding, 40% of chrysanthemum EC are 2,000 times the liquid spraying leaves anti-frontal. (6) Huang Shougua: Also called Gua Shou, Huang Bu, Huang Ying, melon firefly, melon yellow leaves. Adults mainly harm the seedlings, feed on the leaves, and even eat the leaves, but also eat adult leaves, flowers and young larvae, and feed on the grown rind. Larvae (also known as leeches) take melon roots in the soil, grow into the roots and stems, causing the melon seedlings to wither and die, and also to eat melon stalks and melons, which is extremely harmful to melons. Prevention methods are as follows: 1 Daejeon early colonization, so that early melon flowering melon, can reduce seedling damage. 2 When the dew did not dry in the morning and the fly of the adult was poor, manual killing was performed. Or insert branches in the field in the evening and concentrate in the morning. (3) In the oviposition period of adults, single or mixed grass ash, lime powder, caramel, sawdust, etc., can be sprinkled on the ground around the quail to prevent adult oviposition and damage. 4 chemical control. After the planting of the melon seedlings, the adult insects were sprayed with 90% trichlorfon 1000 times and even sprayed 2 or 3 times. Control larvae can be 90% trichlorfon 1000 ~ 1500 times or 30 times tobacco water irrigation root once every 10 days, a total of 2 ~ 3 times. (7) Locust: Locust is also called honeyworm. The locust that harms melons is the melon cricket, which is cotton aphid. Aphids are very common and mainly damage leaves, shoots and tender stems. Its prevention and control methods are as follows: 1 timely removal of leaves and stubble in the field, eradication of weeds in the fields, elimination of locust breeding grounds. 2 Insert a few yellow traps in the field to kill. The method for making the yellow trap board is to first apply a layer of deep yellow paint on the cardboard, fiberboard or plywood. After the paint is dry, apply a transparent 10# oil. Since the locusts like oranges most, those who have seen their wings with yellowish traps have all come flying on the trapping boards and are stuck with oil to achieve the purpose of sedation. It is also possible to fly a silver-gray film at the head of the field to dispel the winged owls and prevent them from falling into eggs. 3 chemical control. Can be used 20% speed killing Ding or 2.5% enemy killing, 2.5% kung fu, 40% chrysanthemum EC and other 2000 ~ 3000 times spray on the back of the leaves and tender stems and other aphids like aggregation site. (8) Starscream: Also known as Leafhopper. Mainly to adult quail, cubs, if the cricket sucking sap in the back, and spinning knot network. In the beginning, there were sporadic chlorotic spots on the foliage. When it is serious, it is covered with white spots, and the leaves turn gray, and the whole leaves are dry and fall off. Control methods are as follows: 1 timely removal of field weeds and broken leaves and leaves. 2 Red spiders reproduce very quickly. Once found in the field, insecticide should be sprayed immediately. Available with 73% Kraft EC 1000 times or 25% extinguished manganese wettable powder 1000 times, 20% compound yangmycin 1000 times, 50% sulfur suspension 200~300 times, 40% chrysanthemum EC 2000~3000 times liquid spray.
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