How to control citrus fruit fly?

What are the hazards of citrus fruit flies? How to control citrus fruit fly? Also ask experienced netizens to help introduce the citrus fruit fly, commonly known as citrus maggot, and the killed fruit is called maggot fruit, which generally begins to occur in the strong citrus fruit period, so the planting network has sorted out the harm of citrus fruit fly and its control methods, which are listed in detail below for netizens' reference. The harm of citrus fruit fly: citrus fruit fly generally harms four types of citrus: pomelo, lime, navel orange and wide-skinned citrus, among which limes and sweet oranges suffer the most. The larvae feed on the petal in the fruit, which makes the fruit yellow before ripening and reddish in the yellow. the damaged fruit rotted seriously. The fruit drop rate of citrus in general years is about 10%, and that in serious years is more than 60%, which does serious harm to yield and fruit. Control methods of citrus fruit fly: method 1. Adult Eclosion comes out of the soil in the first and middle of May, which is generally concentrated from 9 am to 12:00, especially in the sunny weather after rain, when the temperature is high. On May 5-8, 100 grams per mu of crystal trichlorfon was used, and on May 13-16, 100 ml of chlorpyrifos per mu was used to spray 50 kg of water on the ground to block the emergence of adults. Method 2. From May 20, the adults were trapped and killed with sweet and sour medicine solution. The trapping agent formula was composed of orange juice + brown sugar and 90% trichlorfon aqueous solution. The formula ratio was trichlorfon: orange juice: brown sugar: water = 0.2V 5v 5v 100. Put the decoy into a disposable plastic cup, pass through the edge of the plastic cup with wire, and tie the ends of the wire to the branches of the orange tree. Disposable plastic cups should be hung on the shady side or north of the middle layer of the orange tree crown, 20-25 plastic cups per mu should be hung evenly, and the trap should be changed every 10 days or so. What is the symptom of lack of fertilizer in citrus butterfly