How to prevent tea tree tea lily weevil?

The tea li-patterned weevil is also known as the black and green weevil, and the flower chicken girl. Adults feed on new shoot leaves, and larvae inhabit soil and feed on organic matter and fibrous roots. Prevention and control methods:

Artificial killing, using the feigned death of adults, vibrating the tea tree in the peak period, using tools to undertake the destruction of the grinding ruler, and intensively exterminating it. Pesticide control, spraying 98% borer 1000 times liquid (75 grams per mu) during the occurrence of adult worms5% bifenthrin 750 1000 times solution (75 100 ml per mu), Beauveria bassiana (100 million spore fibers per free ml).

Cultivating and exterminating pupa. At the pupation stage, the soil was deeply cultivated for 10 cm on the side of the tea bush, which had a good killing effect on the insect pupae in the soil. Cultivating not only destroys the habitat environment of the pupae, but also causes the rupture of the pupa soil chamber and makes the pupa mechanical.

In addition, part of the pupae body is also exposed to the soil surface to facilitate the predation of natural enemies.

Artificial killing. Using the feigned death of adults, the tea tree is shaken at the peak stage, and the tools (such as plastic film) are used to undertake and eliminate them intensively. Or combined with cultivating and weeding, bury the adults who have landed in the soil.

Raise chickens to treat insects. In the conditional tea garden, combined with raising chickens to control insects. During the peak period of the adult insects, the chickens are placed in the tea garden, and at the same time of the chickens, the tea tree surface is slapped to make the adults fake their deaths to the ground, which is conducive to the predation of the repentant chickens.

One generation occurs in one year, and the young and old insects overwinter in the soil under the canopy of the tea bush, and the overwintering larvae in Hangzhou, Zhejiang Province pupate in late April, begin to emerge and emerge in mid-May, and May and June are the peak period of adult damage. (1) Manual killing: using the feigned death of adults, laying plastic film on the ground during the peak period of adult occurrence and using oscillation method to kill adults.

2) Tea garden farming: in July and August, combined with the application of base fertilizer to carry out tea garden hoeing, shallow turning, deep turning, can significantly affect the first hatching larvae into the soil and the survival of larvae thereafter, and its control effect can reach 50%. (3) Biological control:

Beauveria bassiana 871 powder can be used to mix fine soil per 667m21 2kg and sprinkle it on the soil surface. (4) Chemical control: green food tea garden collapse wheel, low residue tea garden, according to the number of insects per hectare of more than 150,000 heads, spray 98% borer dan wettable powder 1000 times, 10% bifenthrin EC 3000 6000 times liquid in the adult stage.

Generally, tea gardens can be sprayed with 1000 times of bethion emulsifiable concentrate.

The weevil is harmed by adult insects biting and feeding on leaves or burning holes, which is serious in local tea areas. After the adult emerges, it first lies in the soil for two or three days, and then climbs up the tea tree and bites the leaves with irregular gaps. Female adults lay their eggs in the topsoil at a depth of 1 2 cm in the rhizosphere of tea plants.

After hatching, the larvae live in the soil and feed on organic matter and fine roots.

The tea weevil is hazardous.