摘要
为探索不同类型稻田生态系统调控功能的机理,通过吸虫器和目测两种取样方法,研究了有机和化防稻田中稻飞虱与其主要天敌类群的时间生态位宽度及生态位重叠变化规律。研究结果表明,2010年采用吸虫器法取样,有机稻田中稻飞虱与主要天敌类群的时间生态位重叠值平均值(0.5272)大于化防稻田(0.4288),有机稻田中主要天敌类群的生态位宽度平均值(0.4383)大于化防稻田(0.3625)。2011年采用目测法取样,有机稻田中稻飞虱与主要天敌类群的生态位重叠值平均值(0.4308)大于化防稻田(0.2898),主要天敌类群的生态位宽度平均值(0.4849)也大于化防稻田(0.3777)。与化防稻田生态系统比较,有机稻田生态系统是通过影响稻飞虱和天敌类群的生态位宽度指数及其生态位重叠值来增强稻田节肢动物群落系统的自我调控能力。
In order to explore the regulation mechanisms in different type of paddy field ecosystems,the dynamics of temporal niche breadth and overlap of rice planthoppers and their natural enemies in organic and chemical control paddy fields were investigated. Insects were sampled by blower-vac machine or directly inspection in 2010 and 2011,respectively. The results showed that the average temporal niche overlap and breath between rice planthoppers and their natural enemies in organic fields（ 0. 5272 and 0. 4383,respectively） were larger than those in chemical controlled paddy fields（ 0. 4288 and 0. 3625,respectively） in 2010. A similar patterns were also observed in 2011,the temporal niche overlap and breath were larger in organic fields（ 0. 4308 and 0. 4849,respectively）. Compared to chemical controlled paddy fields,the arthropod populations in organic paddy fields were enhanced by having larger temporal niche breath and overlap between rice planthoppers and their natural enemies.
出处
《山西农业大学学报（自然科学版）》
CAS
2014年第6期503-507,共5页
Journal of Shanxi Agricultural University(Natural Science Edition)
基金
国家973项目(2010CB126200)
关键词
有机稻田
化防稻田
稻飞虱
天敌
时间生态位
Organic paddy field
Chemical controlled paddy field
Rice planthoppers
Natural enemies
Temporal niche
