Concept, advantages and disadvantages of chemical control

The concept of chemical control: the method of controlling pests such as diseases, weeds and insects with various toxic chemicals.

Advantages and disadvantages:

Its advantages are wide insecticidal spectrum, high speed and efficiency, simple use method, no geographical and seasonal restrictions, and convenient for large-scale mechanized control.

The disadvantage is that it is easy to cause human and animal poisoning, pollute the environment, kill natural enemies, and cause secondary pests to run rampant again. Long-term use of the same pesticide can make some pests have different degrees of drug resistance.