稻水象甲在安徽桐城的发生规律调查  

Bionomics of Lissorhoptrus oryzophilus in Tongcheng, Anhui Province.

作　　者：方海维[1] 章炳旺[2] 方向群[1] 陈春秋[1] 李青林[1] 姚成意 余宏斌 

机构地区：[1]安徽省桐城市农技中心植保站,桐城231400 [2]安徽省安庆市植保站,安庆246001 [3]安徽省桐城市大关镇农技站,桐城231400 [4]安徽省桐城市卅铺镇农技站,桐城231400

出　　处：《昆虫知识》2003年第6期546-549,共4页Entomological Knowledge

摘　　要：作者于 2 0 0 1～ 2 0 0 2年对安徽省桐城市的稻水象甲的分布区域进行了调查和监测。该虫在当地每年发生 1代 ,越冬代成虫高峰出现在 5月下旬 ,当年成虫于 8月中、下旬直接越冬成为下一年的虫源 ;在 5月 2 0日左右田间出现成虫明显为害状 ,水稻植株主要受害期在分蘖期 ;其寄主除水稻外 ,还有稗草、李氏禾、狼尾草、雀麦等多种杂草 ;成虫在田间呈聚集分布型。Occurrence of Lissorhoptrus oryzophilus Kuschel in Tongcheng City, Anhui Province was investigated in 2001～2002. There is only one generation a year in this area. The adult peak of the overwintering generation appears in the last ten days of May. The adults overwinter directly in the last twenty days of Augest. Crop damage becomes evident around May 20. The vulnerable period of rice plants is in the tillering stage. The host plants include rice, barnyardgrass, and many other weeds. The field distribution of adulds is convergent type.

关 键 词：稻水象甲 发生规律 安徽桐城 受害期 

分 类 号：S435.112[农业科学—农业昆虫与害虫防治]