The damage characteristics and control methods of cotton aphids
Hazardous features: Aphis gossip sucking mouthparts in the back of the cotton leaf and tender parts of the suction liquid juice, so that the cotton leaves deformed growth, curled to the back. Aphid damage is mainly in the seedling stage and the budding stage, and the seedling stage damages the cotton aphid called seedling aphid. Generally, the damage will delay the development of the cotton seedlings, resulting in a late-maturing yield reduction. When severe damage occurs, the cotton seedlings cannot continue to develop or even die; The cotton cocoon is known as the Fuxi, which causes the bolls to fall off, and some of them cause defoliation and reduce the yield. The cotton boll-opening period sometimes includes damage to the cotton bolls called autumn boil, contaminated cotton wool, and reduces cotton quality. Control methods: First, agricultural control: The implementation of cotton and wheat crop rotation, the use of wheat barrier to prevent winged toads to migrate to the cotton fields, but also to facilitate the transfer of wheat plant natural enemies to cotton plants, and strengthen the cotton field's ability to regulate self-control. Second, the use of natural enemies: the wheat field will not kill the natural enemies with selective insecticides, such as anti-influence, to protect the natural enemies to the cotton field. In the field of cotton, the stilts are inserted and the natural enemies can be recruited, which can be well controlled. After the closure of cotton in mid-July, in the event of continuous rain for 5 to 6 days, the temperature rose to above 26°C after rain, and the fungus may become popular and control locust damage. The most important thing for the protection and use of natural enemies is to not use drugs. Do not use drugs with scoop ratio below 1:150. Third, the chemical control: Miao 蚜 蚜 100 three-leaf 蚜 2500 or the emergence of rolling leaf strains as prevention and treatment indicators, the average per plant, the upper and middle, lower leaves 3 蚜 200 as a control index. When the cotton aphid reaches the prevention and control index, it is in the spotting stage and should be sprayed locally to avoid large-scale drug use. It can be used as a low-toxicity and high-efficiency insecticide such as Sucrolimus, imidacloprid, and Poria. Combined control of three generations of cotton bollworm can also be combined with the treatment of Fuxi. With low-power, miniature size, the serial communication department range sensor with mm accuracy can measure up to 20m, 40m, 60m, 100m, 150m, 200m. Serial Laser Distance Sensor,Serial Communication Laser Distance Sensor,Laser Range Sensor Boards,Distance Sensor Panel Chengdu JRT Meter Technology Co., Ltd , https://www.cdtoflidarsensor.com
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