4.Disaster characteristics of Agricultural pest Insects 1)They are an abundant species. World:67000 insect species injuring agricultural crops. ☐China,1000. Rice:380 sp.; Wheat:240 sp.; Corn,sorghum,millet and others:500 sp.; Cotton:300 sp.; Vegetables:300 sp.; Fruit trees:900 sp. 17 17 4. Disaster characteristics of 4. Disaster characteristics of Agricultural pest Insects Agricultural pest Insects 1) They are an abundant species. 1) They are an abundant species. World: 67000 insect species injuring World: 67000 insect species injuring agricultural crops. agricultural crops. China, 1000. China, 1000. Rice: 380 sp.; Wheat: 240 sp.; Rice: 380 sp.; Wheat: 240 sp.; Corn, sorghum, millet and others: 500 sp.; Corn, sorghum, millet and others: 500 sp.; Cotton: 300 sp.; Vegetables: 300 sp.; Cotton: 300 sp.; Vegetables: 300 sp.; Fruit trees: 900 sp. Fruit trees: 900 sp