摘要
为确定黑龙江西部地区草原蝗虫及天敌发生情况,利用网捕法、定点调查等方法调查蝗虫及天敌种类,结果发现蝗虫种类18种,隶属于8科。优势种蝗虫有中华稻蝗、短额负蝗、黄胫小车蝗、亚洲小车蝗、宽翅曲背蝗和大垫尖翅蝗。7月和8月蝗虫丰富度最大、多样性指数最高,是蝗虫危害高峰期。天敌种类共计14种,其中捕食性天敌种类较多,包括虎甲、步甲、螳螂、螽斯、各种蜘蛛,主要捕食蝗蝻和成蝗,斑芫菁主要捕食蝗卵。寄生性天敌有麻蝇、绒螨。蝗虫天敌与蝗虫的发生趋势较同步,可以发挥自然控制作用。该调查结果对维持黑龙江西部地区草原生态系统平衡具有一定的指导作用。
In order to determine condition of grassland locust and natural enemies in western Heilongjiang province,the methods of nets trap and fixed plants were used to investigate the grassland locust information and its natural enemy. The results showed that 18 species from trapping collection were identified to belong to 8 families in the investigation period. The dominant species are Oxya chinensis,Atractomorpha sinensis,Oedaleus infernalis,Oedaleus asiaticus,pararcyptera microptera meridionalis and Epacromius coerulipes. The highest peak of grassland locust＇s richness and diversity index occurred in july and august,and indicated the most serious injury. In total,14 species of natural enemy were found. Predatory natural enemy species were more species,including tiger beetles,ground beetles,mantis,katydid,various kinds of spiders,which mainly preyed nymphs and adult locusts. Blister beetles mainly preyed eggs of locusts. Parasite natural enemies were flesh fly,velvet mites. Natural enemies of grassland locust and grassland locust occurrence trend were synchronous and could play a controlling role. The investigation results could provide some guidance for grassland ecosystem balance in western Heilongjiang province.
出处
《黑龙江八一农垦大学学报》
2015年第4期6-11,共6页
journal of heilongjiang bayi agricultural university
基金
国家公益性行业(农业)科研专项(201003079)
黑龙江省寒地作物栽培与种质改良重点实验室支持项目
关键词
蝗虫
天敌
优势度
多样性
grassland locust
natural enemy
dominance
diversity
