Dear friends, everyone, the Century Pesticide Network Xiaobian has come to give you a general approach to the prevention and control of plant diseases and insect pests. Doing a good job in the prevention and control of pests and diseases is a very important part of the planting process and is of great significance for improving production. Let's take a look at it with Xiaobian!
After discovering that the locusts are harmful, they must adopt various methods such as physics, chemistry, and biology, and avoid them to avoid their outbreaks.
Find out the habits of life, use high temperature insecticide
At 30 °C in the greenhouse, the reproductive development will be affected by the sputum, and the lethal temperature of the sassafras is 40 °C. Using the characteristics of locusts, vegetable growers can use the high temperature shack method to attack mites.
The vegetable grower can pour a torrent at noon on a sunny day, then close the ventilator of the shed, and increase the temperature in the shed to 40 °C for about 2 hours, killing many mites by high temperature. The purpose of sprinkling water is to avoid the high temperature of the plants to lose water and wilting; the second is that the locusts often hide in the gaps in the soil because of the high temperature, and can drown the mites after the water is sprayed to prevent them from continuing to damage the plants.
Finishing the shed, reducing the number of insect bases
The agricultural control methods for small pests are very important, and the greenhouse should be fully treated in each change period. Weeds, litter and so on are all beneficial places for pests. Weeds should be eradicated in the shed, eradicated with dead leaves and rotten leaves, and the source of infection should be blocked.
After the spring weeds sprout, when the aphids start to harm, the farmers can spray avermectins, oxazolidine and other agents to kill the mites around the shed, to avoid their transmission to the shed, especially the arch shed. In addition, there is no vegetable in the shed during the vegetable break period, which is a favorable opportunity for killing insects and annihilating eggs. The shed (soil, column, crack corner, etc.) can be disinfected during the break period. In the summer break period, high temperature shacks can be used to kill the pests and eggs on the pillars and the surface.
Chemical control, attention to eggs and killing
When the mites are serious, they are stacked from generation to generation, and eggs, nymphs, and adults are present at the same time. Therefore, it is necessary to kill the eggs in the prevention and treatment.
At present, the main killing agents in acaricides are spironolactone and etoxazole. Among them, avermectin, alkyne, and scorpion are better. To ensure the effect, these two types of agents can be mixed.
In addition to the use of insects and eggs, the vegetable farmers should also pay attention to the method of spraying. Most of the mites are damaged on the opposite side of the vegetable leaves, the flower buds and other tender parts. When spraying the medicine, the nozzle should be facing upwards, and the opposite side of the leaves should be sprayed. Aphids often form clusters at the end of the leaf, rolling on the ground, so the spray should be focused on the ground.
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