摘要
2018年常德市周家店镇水稻二化螟为害严重,为了能更有效合理防治水稻二化螟,采用GB/T 15792-2009稻桩剥查法对该区域稻区的水稻二化螟越冬虫口密度进行调查。结果表明:该区域越冬前虫口密度最高达477 572头/667m^2,最低为243 121头/667m^2,平均388 250头/667m^2;越冬后虫口密度最高达252 793头/667m^2,最低为31 349头/667m^2,平均145 183头/667m^2。二化螟越冬后种群仍处在较高数量,且在越冬后调查期间已在田间发现二化螟成虫,需持续高度关注该区域二化螟的发生动态。为了降低水稻二化螟的越冬基数,应对稻茬进行适当的处理。
Zhoujiadian,a town of Changde City,had suffered a serious damage from rich stem borers(Chilo suppressalis)in 2018.In order to prevent and control the pest more effectively,a stubble–scraping method of GB/T 15792—2009 was employed to investigate the overwintering population density of rich stem borers.Before overwintering,the highest population density was 7.164 million/hm^2,the lowest 3.646 million/hm^2,and the average 5.823 million/hm^2.After overwintering,C.suppressalis adults were found in the field,the population was still in a relatively high number with the highest density 3.791 million/hm^2,the lowest 0.47 million/hm^2 and the average 2.178 million/hm^2.Apart from dealing with rice stubble,it is necessary to pay close attention to the occurrence of C.suppressalis in this area.
作者
周训军
张美文
章宜
王勇
姜路帆
郑普阳
江泽玉
马志辉
ZHOU Xun-jun;ZHANG Mei-wen;ZHANG Yi;WANG Yong;JIANG Lu-fan;ZHENG Pu-yang;JIANG Ze-yu;MA Zhi-hui(Dongting Lake Station for Wetland Ecosystem Research,Key Laboratory for Agro-Ecological Processes in Subtropical Region,Institute of Subtropical Agriculture,Chinese Academy of Sciences,Changsha 410125,PRC;Hunan Institute of Plant Protection,Changsha 410125,PRC;Yueyang Agriculture Bureau,Yueyang 414199,PRC)
出处
《湖南农业科学》
2019年第8期61-62,65,共3页
Hunan Agricultural Sciences
基金
中国科学院信息化专项课题(XXH-13505-03-104)
关键词
水稻
二化螟
越冬虫量
稻茬
Chilo suppressalis
overwintering density
damage
rice stubble
