Biological control is the use of metabolic products of beneficial organisms or beneficial organisms to control pests and diseases. There are mainly the following:

1. Insect pest control

The use of beneficial insects to eliminate pests can be carried out by protecting natural enemy insects and artificially breeding large numbers of natural enemy insects.

2, the bacteria control

Use microorganisms to control pests. The beneficial microorganisms currently utilized are mainly bacteria, fungi, and viruses. Such as Acariciid, Penicillium, Beauveria bassiana and Polyhedrosis virus, etc., widely used to control a variety of agricultural and forestry pests.

3, treatment of bacteria

The use of microorganisms and their metabolites to control diseases, such as the use of spring arsenic to control rice blast, Jinggangmycin to control sheath blight.

4. Treating insects with other animals

It is mainly to control insects with beneficial birds and to control insects with amphibians. There are more than 1,000 species of birds in our country, the vast majority of which prey on birds. The pests they prey on are mainly aphids, red mites, hibiscus, cockroaches, geyser, beetles, chafers, leaf bees, weevils and leaf beetles. The amphibians used to control pests are mainly frogs, and the feeding insects include aphids, butterfly larvae and adults, elephants, leaf beetles, chafers, ants, and the like. In rice fields, the protection of frogs is conducive to the control of rice pests. In addition, rice paddy raising ducks have good control effects on rice sheath blight and various rice pests.