摘要
系统研究了稻田和稻田周围非稻田生境中飞虱、叶蝉和寄生性天敌的种类、分布及其相对丰盛度,并阐明了不同生境间同翅目寄主和天敌的相互关系.稻飞虱和稻叶蝉在非稻田生境中的数量很低,然稻田重要卵寄生蜂Anagrusspp.Oligositaspp.和Gonatocerusspp.在非稻田生境中的平均密度很高.多样性指数低的植被上存在更多的飞虱和叶蝉,同时也保存了许多寄生性天敌.水稻移栽后稻田中节肢动物的数量逐渐上升。
This paper deals with the species,distribution and relative abundance of homopterans and associated egg parasitoids in both rice and surrounding non rice habitats,the relationship of egg parasitoids with vegetations is discussed also.A very low density of rice planthoppers and leafhoppers is found in the non rice habitats,however,an abundance of egg parasitoids, Anagrus spp., Oligosita spp. and Gonatocerus spp.exists in the surrounding non rice habitats.The vegetation with less diversity index support more homopterans and associated egg parasitoids,having obviously effects on the neighboring rice fields.The number of homopterans and egg parasitoids increase gradually in rice fields after newly rice transplanting,reaching sympotom at the 4th week.
出处
《科技通报》
1997年第4期205-210,共6页
Bulletin of Science and Technology
基金
国际科学基金
浙江省自然科学基金
关键词
稻田生态系统
飞虱
叶蝉
天敌
种群动态
rice ecosystem, delphacids, cicadellids, natural enemies, population dynamics, interaction