At present, while desperately preventing thrips, there is also a pest that cannot be underestimated, that is, beetles. At this time, the tender leaves of mango trees grow out. If it is found that the leaves are bitten off from the handle and the branches are bare, we should pay attention to the harm of leaf cutter to the young leaves. How do mango beetles harm mangoes? Through observation, it is found that there are four kinds of weevils that harm mango, namely mango fruit weevil, meat weevil, stone weevil and leaf-cutting weevil. Mango leaf-cutting weevil harms mango leaves, and the other three weevils harm mango fruits.

It is a strong alkaline insecticide and acaricide, which is produced by the reaction of sulfur and quicklime. It is also effective for anthracnose and powdery mildew, and its price is low. It is mainly used for cleaning the garden before flowering and after fruit picking to prevent mites and scale insects. 45% crystallization of mango is 60-80 times in dormancy period, 30-60 times in 29% aqueous solution, spraying once every 7 days in tender shoot growth period, 40% dimethoate EC 1500 times, 90% trichlorfon 1000 times and 25% dimehypo 500-800 times.

In severely damaged sugarcane fields without perennial roots, sugarcane should be plowed and raked in time after harvest, resulting in unfavorable living environment for elephants. Mechanical action and manual picking should be combined to reduce overwintering adults. Control agent: Pour 40-50g of 20% diclofenac (Chunlei Wang Tong, Zhongshengmycin) on the head of mango tree with 30kg of water, and increase or decrease the agent according to the size of the tree, with 40g for small and 50g for large.

The application of Liangguoan spray at two canopy leaf growth points, flowering period and fruit growth period can supplement nutrition, increase the thickness of waxy layer of leaves and fruits, increase chlorophyll content, improve mango self-nutrition ability and prevent diseases such as sunburn. Mix 500ml+ Kuifuling+silicone (the dilution ratio can be flexibly controlled according to the disease situation of the park in previous years, the strength of trees and whether the climate has the disease conditions) with water 100-200 kg, and spray the whole plant 1 time for comprehensive sterilization.