Abstract:

Agricultural bio-disaster is a serious kind of natural disaster, usually refers to large outbreak of harmful organisms (viruses, bacteria, fungi, harmful plants and harmful animals, etc.) that threaten or endanger agricultural production, agro-ecological environment and human economic activities. It mainly includes crop diseases, insects, grasses, and rodents. There are many kinds of bio-disasters in Sichuan with high occurrence and serious damage, which gravely affect the yield and quality of agricultural products. Through mass data research on the types of disasters, we analyzed the damage situation, the trend of damage, and the reasons of aggravating biological disasters with a view to the development status of dry-land agriculture in Sichuan. We summarized the types and causes of the occurrence of dry-land biological disasters, and proposed the prevention and control strategy as “plant quarantine as the premise, agricultural measures as the basis for prevention and control, physical measures as the support, biological measures as the focus, chemical prevention and control as the guarantee”. Mastering the types and damage regularity of biological disasters could help us to carry out targeted prevention and treatment, so as to reduce losses in agricultural production.

Key words: Bio-disaster, Harmful Situation, Disaster Statistics, Disaster Damage, Damage Tendency