有益生物利用技术研发的限制因素与对策

农田生态系统的生物多样性受到限制,害虫失去了天敌的控制易形成爆发性危害;杀虫剂的使用在消灭害虫的同时也消灭了害虫的天敌,遗传变异和有毒环境的自然选择使害虫产生高抗性,导致杀虫剂的防治效果下降,于是不得不增加农药的使用量而陷入恶性循环.适当增加环境中有益生物的数量可实现害虫的有效控制;有益生物人工饲养技术的发展为防治农业害虫奠定了较好的基础.但是,投资与收益者不能统一的矛盾以及滥用农药使生物防治技术的应用受到限制.加大政府的支持力度,建立有益生物利用保护区和适宜的投入运行机制,加强多种生物配合利用方面的研究可促进有益生物利用技术的研发与推广.

Countermeasures and Limiting Factors of Research and Application on Beneficial Organisms

Increasing beneficial organisms in environment is an efficient way to control insect enemy,which is promoted by quickly developing technology of artificial raising beneficial organisms.But there are some limiting factors to utility of biological control technology,such as: not balance between investor and income person,and abusing great quantity of pesticide.Thereby,the key to research and application of beneficial organisms is to obtain strong support from the government,establish reserves of beneficial organisms,establish the sustainable running mechanism of the investment,enhance cooperation and utility among various organisms.