Have you ever seen a hungry tiger swallow a sheep? I believe that there are not too many people who have seen it with their own eyes. However, if it is mentioned that the leaf-cutting tiger sweeps the orchard, many farmers must have seen it.
This tiger is not a "tiger", it is not a vain name, but a "leaf eating professional household". This insect has a super ability to harm the young leaves of the longan treetops, and can directly destroy the fruit of the longan tree and affect the yield.
During this time, Xiaobian received a "micro-map complaint" from farmers in Bobai County, Yulin, Guangxi, and Nada Town, Danzhou, Hainan, informing them that many longan leaves in the orchard were seriously mothed by insect pests, nibbling spots into a circular network, the leaves were completely shrunk and dried up, the base of the leaves was broken by insects, the incisions were very neat like a knife cutting, and almost all the fruit trees that were infringed became bald.
Those dead branches and bare tree tops are the obvious evidence of the crime committed by the leaf-cutting tiger. Is there no way to take this slight infestation pest?
Of course there is a way! In fact, the original favorite host of the leaf-cutting tiger is not the longan tree, but the leaf flesh of the new shoots of the more perfect and fun mango tree. Therefore, it is usually a large-scale leaf-cutting tiger pest infestation in the "mixed breed" orchard where mango and longan are mixed or the longan planting area adjacent to the mango orchard.
Leaf-cutting tiger is mainly distributed in Guangxi, Guangdong, Hainan, Yunnan, Taiwan and other provinces and regions, this pest in Hainan 1 year 9 generations, Guangxi 1 year 7 generations, Guangdong 1 year 8 generations, Yunnan 1 year 3-4 generations. From May onwards, generational overlap occurs; Adults are reddish yellow , with dense white villi on the middle , posterior thorax and abdomen , yellow leg segments of the feet , and black tibia and tarsal segments.
In particular, it is worth mentioning that leaf-cutting tigers like to gather in groups among the young leaves of the high-end treetops of fruit trees; leaf-cutting tigers will quickly fake death and fall to the ground or fly away to escape in the middle of the way. After being patronized by the leaf-cutting tiger, the leaves of the longan treetops are full of holes, and it is impossible to photosynthesis at all, which directly affects the growth of fruit trees and fruit abundance.
The key point is: to prevent and control leaf-cutting tigers, as long as you master the 3 major points, you can eliminate them very well.
1. Mango and longan mix-and-match planting parks need to be weeded, fertilized to control winter shoots, and combined with turning over the garden in winter to block pupae and overwintering larvae in cracks in the soil layer. New orchards should try to avoid longan planting with mangoes.
2. Timely dispose of the branches and leaves that have been eaten by the leaf-cutting tiger, burn them centrally, eliminate the eggs, and reduce the mouth of the new second-generation insects; at the same time, pay attention to protecting the natural enemies of the leaf-cutting tiger, such as the bee.
3. Familiar with the rules of drug prevention and control, and decisively spray the appropriate time during the feathering period of adult insects. The recommended effective agents mainly include: 90% crystalline enemy insects, 20% rapid killing, 2.5% enemy killing 2000---2500 times liquid, 30% bis god emulsion 2000 --- 2500 times liquid, etc. The above agents are used alternately to reduce insect pest resistance.
Actively prevent and control leaf cutting tiger cutting is urgent, I hope that the effective scientific care of longan tree methods can play a good role in promoting your longan planting to increase production and income.