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植物的逆境灾害,如病虫害、干旱、寒害、水涝等,每年给世界农业生产造成的损失高达两千多亿美元。目前农业生产上对作物病虫害等生物逆境的防治手段以化学农药及抗病虫作物品种为主,对旱寒涝等非生物逆境则几乎没有有效的防控措施。化学农药的大量应用引起病虫抗药性日趋严重,农药使用
Plant adversity disasters, such as pests and diseases, drought, cold damage, waterlogging, each year to the world agricultural production losses of up to 200 billion US dollars. At present, the means of prevention and control of biological adversities such as plant diseases and insect pests in agricultural production are dominated by chemical pesticides and pest-resistant crop varieties, and there are practically no effective prevention and control measures for abiotic stresses such as drought and waterlogging. A large number of chemical pesticides cause pest and disease resistance is increasingly serious, pesticide use