Weakness: the pollution of the environment, killer predators, pests drug-resistant produce, cause secondary pests for the main insect pests rise.
缺点：污染环境，杀伤天敌，害虫抗药性产生，导致次要害虫上升为主要害虫。
Major known defense chemicals include plant secondary metabolites, protein inhibitors of insect digestive enzymes, proteases, lectins, amino acid deaminases and oxidases.
目前已知的防御化合物主要包括植物次生代谢物质、昆虫消化酶(蛋白)抑制剂、蛋白酶、凝集素、氨基酸脱氨酶和氧化酶。
The plant secondary metabolite and the insect semiochemical are the important research field in chemical ecology.
植物次生代谢物和昆虫信息素是化学生态学中的重要研究内容。
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