Green prevention and control technology of peanut pests

Cultivate the soil, weeding and mowing. The cultivating and cultivating soil is the key measure to solve the difficulty of slipping needles and high-level fruit needles into the soil, which can significantly increase the number of effective needles and improve the quality of the group. Spring peanuts should be cultivated before the peanuts are sealed in the field during the full bloom period. The summer broadcast peanuts and wheat peanuts are carried out before the beginning of the flowering. July and August are the rainy seasons in our province. The rainfall is concentrated and the rainfall is large, which often causes peanut damage. Therefore, strengthening the cultivating and cultivating soil not only plays a role in weeding, but also cleans the furrows, and the drainage is smooth, so as to avoid waterlogging. Chemical weeding can be carried out in the 3~5 leaf stage of peanuts and 2~5 leaf stage of weeds. 11.8% fine quinoxaline emulsified emulsifiable concentrate 30~40 ml/mu or 15% quinoxaline fluorosulfonamide emulsifiable concentrate 100~140 ml/ The acre, the stems and leaves are evenly sprayed to prevent grass weeds and broadleaf weeds.

Green control of pests and diseases, effective prevention and control of aflatoxin contamination. First, we must promptly control diseases such as peanut leaf spot and scab. When the diseased leaf rate reaches 10%, use 17% azole or epoxiconazole suspension for 45 ml or 30% difenoconazole and propiconazole EC 20 ml per acre, 60% pyraclostrobin 60 grams of water-dispersible granules were sprayed once every 10 to 15 days, and sprayed twice. The above-mentioned medicaments are applied alternately, and the spray is thoroughly drenched. Rainy and hot weather pay attention to the rushing spray, such as rain after spraying, it is necessary to make up the spray in time. Second, we must promptly control underground pests such as underground pests and cotton bollworms. For spring peanuts with early sowing date, according to the insect condition, in the lower needle period of peanut, use 1000% solution of 30% phoxim microcapsule suspension or 30% chlorpyrifos microcapsule suspension agent; or according to the above active ingredient of the agent 100å…‹/mu mixed with toxic soil, before or after raining, the pesticide is concentrated and evenly applied to the soil surface of the main stem of the plant, which can control the adult worms that feed on peanut leaves or to the roots of peanuts. Other underground pests. In the early stage of the second generation of cotton bollworm, 1 to 3 instar larvae were used to control the 1st to 3rd instar larvae, using 25g/L deltamethrin EC 25~30ml/mu or 5% Fluorizine EC 110~140ml/mu, and adding 1000 times spray. After the 3rd instar of Helicoverpa armigera, use 15% indoxacarb suspension 10~18ml/mu, and dilute 1000~1500 times with water to spray, the above agents can cure beet armyworm. It is recommended to use insecticidal lamps and sexual attractants to trap pests such as golden tortoise shell, cotton bollworm, beet armyworm and ground tiger. Third, we must promptly control the damage of peanuts and horseshoes. The drought is conducive to the spread of these two pests. It can be treated with 60 g / liter of ethyl spinosyn suspension, diluted with water 1500 times foliar spray. Fourth, timely prevention and control of aflatoxin contamination. On the basis of strengthening the prevention and control of pests and diseases, peanuts should be properly irrigated in the late stage of growth, maintain proper soil moisture, and timely harvest, timely drying, and effectively prevent and control aflatoxin contamination.

Flexible control to prevent plant growth. High-yield fields with high density, especially in the rainy season, peanut plants tend to prosper and fall, and plant growth retardants should be applied in time to inhibit stem and leaf growth, control and prolonged, and prevent lodging. During the most prosperous period from the late flowering stage to the early stage of pod-forming, when the main stem height reaches 35 cm and the daily increment exceeds 1.5 cm, 40 to 50 g per mu (effective ingredient 2.0-2.5 g) and 35-40 kg can be used. , foliar application. If the plant height reaches 45 cm after 15 days of the first control, it can be sprayed once more, and the plant height during the harvest period is controlled within 50 cm. The spray retarder should be sprayed evenly to avoid heavy spray, leak spray and rain after spraying. High-yield fields can be combined with pest control to control pests and diseases for 2 to 3 times, and attention should be paid to reducing the amount of chemical control agents.

(Qian Xun)