At present, the citrus planting area is getting larger and larger, many diseases and insect pests may erupt, by which some newly planted plots, acres of orchards, before there is no fruit is not much management, some grasses are higher than fruit trees, this is naturally to attract a lot of wood lice. So it is not difficult for a psychic lice to break out and have yellow dragon disease.
Citrus dragon disease fruit
As we all know, pyllids are the main culprits in the transmission of Xygrosaurus disease, and the rapid spread of Xyryu disease is because of the use of pyllids as a vector. Psyllids occur all year round, adults begin to lay eggs on young leaves from February to March, small peaks occur in the summer shoots from May to June, and july to August, that is, the autumn shoots, is the peak of the breeding activities of the pyllids.
Secret hemp of citrus psyllids
Citrus wood lice on the back of the leaf
For the prevention and treatment of wood lice, we generally use pharmaceutical control, in fact, wood lice is also relatively easy to eliminate, that is, afraid of leakage, generally everyone uses these agents for prevention and control.
First, pharmaceutical prevention and control
The main means of controlling pyllids is drug spraying, it is recommended to choose an efficient, fast-acting agent, the first choice of permethrin insecticides.
Effective agents: thiamethoxine, kung fu, imidacloprid, cyanopherol ▪ bromide, methyl vitamin salt, perchloropyridine ▪, etc.
Second, internal suction prevention and control
This kind of control is mainly the use of systemic agents for control, mainly thiamethoxamine and thiamethoxam, that is, people often say that medicinal fertilizer, medicinal fertilizer is currently used in sugarcane, mainly pesticides and fertilizers are used together, pesticides absorbed into the sugarcane inside, can control some insect pests such as sugarcane borers.
So at present, some people also want to control citrus psyllids through medicinal fertilizer, but because the citrus tree is still relatively large, the amount of medicine does not know whether it is enough, which is also good as a prevention and control idea, but it is still in the experimental stage.
Third, biological control
The method of releasing parasitic wasps, which cause the life of the pyllids by laying eggs inside the eggs of the pyllids, is too controllable. A large number of parasitic wasps need to be released, and there is no guarantee that the parasitic wasps will be able to eliminate psyllids.
Fourth, inducement prevention and control
This type of control is mainly like hanging a yellow board or an insecticidal lamp and other control methods, attracting wood lice to fly over and stick to the yellow board. Or some pheromones that allow the psyllids to be lured over and then destroyed in a concentrated manner.
These are green and environmentally friendly methods, but the effect is not ideal at present, are there any improvement measures?
Of course, there is, Zhongkai Agricultural Engineering College, Han Qunxin, Xie Peng, Li Hao, Liu Xinzhou invented such a citrus wood lice control device, and applied for a utility model patent.
At first glance it looks like a young shoot, with a branch and a young shoot.
Characteristics of citrus psyllid spawning:
Female citrus psyllids lay eggs on young citrus shoots, with tender shoots greater than 0 and less than 5 mm having the highest egg loading rate, followed by young shoots larger than 5 mm and less than 10 mm. When there are young shoots and new leaves at the same time, citrus psyllids will lay eggs on young citrus buds, especially tending to lay eggs on young shoots larger than 0 and less than 10 mm.
Therefore, the length of the carrier of this utility model is greater than 0 and less than 10mm, the structure is similar to that of citrus shoots, so that after the distribution of several carriers to the citrus forest, it can replace the citrus buds to become the spawning place of citrus psyllids, thereby reducing the spawning of citrus psyllids on citrus trees, effectively preventing citrus psyllids, and improving the yield of citrus.
By simulating the young buds of citrus to attract psyllids to lay eggs, and then destroying these eggs in one fell swoop to achieve the purpose of prevention and control, what do you think of this patent? Welcome to leave a comment.