Needle bees, also known as fruit flies, are similar in appearance to flies, but smaller than flies, with golden yellow and black markings all over the body, adults will lay eggs inside the fruit, and larvae moth inside the fruit, causing the fruit to rot and fall fruit. Needle bees reproduce rapidly, are very harmful to fruits, and are known as the number one killer of fruits. How to kill needle bees, you can start from the following aspects.
1. Destroy the wintering place. Needle bees will parasitize on falling fruits, soil under trees, dead bark in winter, in the autumn garden work, clean up fallen fruit, dead bark and deep ploughing soil, irrigate 2-3 times in winter and sprinkle quicklime, can eliminate overwintering larvae and eggs.
2. Make a trap. Using methyl eugenol to make a lures agent to trap male insects, in the peak period of needle bees, 5 traps can be hung in an acre of orchard to trap male insects, which can reduce the insect source base in the orchard. In other periods, the number of hanging cages can be reduced, and the dressing is changed every half a month, and it should be noted that the cages should be hung on the branches of the leafy branches, and cannot be directly exposed to the sun, which will reduce the effect of the attractants. The suspension height is optimal at 1.5 meters above the ground.
3. Drug prevention and treatment. Drugs are selected according to the different stages of growth and development of needle bees, and it is generally the most effective to spray drugs when adults are sprayed. The family uses 95% of the enemy insects 500 times plus 3% sweet and sour solution, which has a better effect on killing adult insects.
4. Yellow plate lure. Needle bees like to lay eggs on ripe yellow fruits and can use the habit of needle bees to trap adults with yellow annual plates.
In addition to killing needle bees, you can also bag the fruit in time to protect the fruit from needle bees. Fruit bagging starts from the young fruit stage, and the mouth of the bag must be fried tightly to prevent needle bees from entering the inside of the bag.