ZHEJIANG SHENDASIAO MEDICAL INSTRUMENT CO.,LTD. , https://www.shendasiaomed.com
Plutella xylostella is a genus of the moth, and the vegetable cultivar also called it a filariae. It is an important pest that harms cabbage, cauliflower, Chinese cabbage and many other vegetables. In April, Plutella xylostella was moderately prevalent on cruciferous vegetables in our province. At present, the prevention and control of diamondback moth is mainly based on chemical control. Due to the large amount of reproduction of the diamondback moth, short generations and rapid variation, it is easy to produce drug resistance, and the problem of resistance of pesticides is more prominent. Therefore, comprehensive measures such as agricultural control and physical control should be adopted to improve the control and control of Plutella xylostella and its drug resistance. Agricultural control: The rational distribution of crop varieties, try to avoid continuous cropping of cruciferous vegetables, break the bridge of pest proliferation; after the harvest of vegetables, promptly clean up the fallen leaves, and then plowing, eliminate the winter and summer insects Eradication of weeds in trench fields reduces adult spawning sites and larval foodstuffs. Physical control: Plutella xylostella has phototaxis. In the adult stage, 1 black light trap is set for every 2/3 hectare of vegetable fields. Biological control: In places where conditions permit, it can release the natural enemies of the diamondback moth to control the damage. Among them, the control of Plutella xylostella was the most obvious among Plutella xylostella, Plutella xylostella and Plutella xylostella. Chemical control: The resistance of the old larvae of the diamondback moth is very strong. Therefore, attention should be paid to the control of the chemical: First, it should be controlled during the hatching period of eggs to the larval 2nd instar; Second, it can only be used 1-3 times per year, and it cannot be used frequently to prevent it. Produce resistance; the third is to use alternately with other pesticides. Optional agents are: BT (Bacillus thuringiensis) suspension 500-800 times liquid, 1% avermectin series insect extermination, extermination, insect dip light, aphid indole, 2.5% vegetable Xie Suicide 1500 times liquid 5% vegetable jelly suspension 1000 times, 0.36% Baicao 1 600-800 times, 15% batting 3500-4000 times, 5% Regent suspension 2000-2500 times, 5% Tai Tai Bao EC 1500-2000 times liquid, 5% stuck flumethasone 2000 times 1500 times, diluting 1500-3000 times, 2.5% cyhalothrin (Kung Fu) 3000 times, Suave 1000-1500 times Wait.