Liriomyza sativae
Liriomyza sativae is commonly known as Liriomyza sativae and so on. Harmful to melons, beans, solanaceous vegetables, Chinese cabbage, celery, rape, pepper, zucchini, cotton, tobacco and other plants.
Injury characteristics: adults and larvae can all be harmed. Larvae invade the leaves and petioles and cause irregular snake-like white insects. The insect tracks are irregularly stretched. The terminal of the insects often becomes broad and the chlorophyll is destroyed, affecting photosynthesis. . The heavy leaves of the victims fell off, causing flower buds and fruit to be burned, causing serious damage to the seedlings. Severely damaged leaves quickly dry up. The damage rate of the affected plots was 30% to 100%, and the output was reduced by 30% to 40%.
Control methods: The rapid development of drug resistance of Liriomyza sativae brings great difficulties to prevention and control. The following points must be made:
1, strict quarantine to prevent the spread of the worm spread.
2, do a good job of agricultural control. In the fast-moving blocks that are particularly harmful to Liriomyza, we must consider the layout of vegetables. Interplant with the unripe crops such as melons, solanes, and beans that are preferred by Liriomyza oryzae; properly plant and increase the permeability of the field. After the harvest, the pastoral areas are cleaned in a timely manner, and the debris that is damaged by the Liriomyza huidoensis are deeply buried, fattened or burned.
Shelters and nursery sites advocate the use of vegetable insect nets for the prevention and control of Liriomyza sativae, which can prevent Liriomyza infestation and reproduction. At the same time it also blocks the intrusion of various pests. Insect nets with residual insects can be trapped with yellow plates.
3, no use of insect nets, appropriate scientific drug use. The eggs are short-lived, and the older larvae have strong resistance to insects. They need to be produced from the peak of adults to the hatching period of eggs or the peak period of young larvae: 5 larvae and 2 larvae of a certain leaf of melons, solanaceous vegetables and legumes. The former and the insect tract are very small. At 8 to 12 o'clock, they are sprayed with 1.8% abamectin 2.500 times or 4.5% beta-cypermethrin EC 1500 times.
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