摘要
【目的】通过分析常规稻作田、稻虾共作田和香根草Vetiveria zizanioides诱集田3种农事操作技术对水稻害虫及其天敌种群动态的影响,为湖北地区新型绿色农事操作技术防控田间害虫、天敌保育和稻田有害生物可持续治理策略提供重要依据。【方法】在水稻抽穗期,采用目测法、扫网法、盆拍法、剥查法对3种农事操作稻田(常规稻作田、稻虾共作田和香根草)内害虫(稻飞虱、稻叶蝉、稻螟虫)和天敌进行搜集和统计。【结果】香根草诱集田内稻飞虱种群数量显著低于稻虾共作田(P<0.05),常规稻作田间稻叶蝉、稻螟虫种群数量显著高于稻虾共作田和香根草诱集田数量(P<0.05);3种农事操作技术下稻田间天敌种类主要以捕食性天敌蜘蛛类、草蛉类、黑肩绿盲蝽Crytorrhinus lividipennis和青翅隐翅虫Paederus fuscipes为主。其中,稻虾共作田和香根草诱集田拟环纹豹蛛Pardosa pseudoannulata、拟水狼蛛Pirata subpiraticus和黑肩绿盲蝽Cyrtorhinus lividipennis种群数量显著高于常规稻作田(P<0.05)。【结论】香根草稻作田间稻叶蝉、稻螟虫种群数量显著低于常规稻作田,稻虾共作田间稻叶蝉、稻飞虱种群数量显著低于常规稻作田;3种农事操作技术下稻田间天敌种类主要以捕食性天敌蜘蛛类、草蛉类、黑肩绿盲蝽为主。
[Objectives]The purpose of this study was to evaluate the effects of three rice farming methods;conventional rice paddies,and those with either shrimp farms or co-planted with Vetiveria zizanioides,on the population dynamics of rice pests and their natural enemies,in order to help prevent and control pest outbreaks and conserve natural enemy populations in paddy fields.[Methods]Visual inspection,net sweeping,pot-patching and stripping,were used to collect and count rice pests(rice planthoppers,rice leafhoppers and rice borers)and their natural enemies(rice spiders,grass midges,Crytorrhinus lividipennis and Paederus fuscipes),during the rice heading stage.[Results]Significantly fewer rice planthoppers were observed in paddy fields co-planted with V.zizanioides than conventional rice paddies,or rice paddies with shrimp farms(P<0.05).Significantly higher numbers of rice leafhoppers and rice borers were found in conventional rice paddies relative to those with V.zizanioides or shrimp farms(P<0.05).The natural enemies of rice pests were spiders,grass midges,C.lividipennis and P.fuscipes.Significantly higher numbers of P.pseudoannulata,Pirata subpiraticus and C.lividipennis were found in paddies co-planted with V.zizanioides,or with shrimp farms,than conventional paddies(P<0.05).[Conclusion]Significantly fewer rice leafhoppers and rice borers were observed in paddies co-planted with V.zizanioides and with shrimp farms than conventional paddies.
作者
李雪梅
郑晓旭
何帅洁
杨凤连
吴刚
LI Xue-Mei;ZHENG Xiao-Xu;HE Shuai-Jie;YANG Feng-Lian;WU Gang(Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory,College of Plant Science and Technology,Huazhong Agricultural University,Wuhan 430070,China)
出处
《应用昆虫学报》
CAS
CSCD
北大核心
2020年第1期105-112,共8页
Chinese Journal of Applied Entomology
基金
国家重点研发计划资助(2017YFD0200400)
国家自然科学基金(31572003)。
关键词
农事操作技术
稻虾共作
香根草
水稻害虫
天敌群动态
farming technology
rice-shrimp co-cultivating
Vetiveria zizanioides
rice pests
population dynamics of natural enemies
