甘肃白银黄河以南地区草地贪夜蛾首发时间比较  

Comparison of the first detection date of fall armyworm in areas south of the Yellow River in Baiyin,Gansu Province

作　　者：柯琴 卢军帅 高强 胡旭芳 闫小蓉 关参政[3] Ke Qin;Lu Junshuai;Gao Qiang;Hu Xufang;Yan Xiaorong;Guan Canzheng(Agricultural Technology Extension Center,Pingchuan District,Baiyin City,Gansu Province,Baiyin Gansu 730913,China;Gansu Plant Protection and Inspection Station,Lanzhou Gansu 730000,China;Baiyin Agricultural Technical Service Center,Gansu Province,Baiyin Gansu 730900,China)

机构地区：[1]甘肃省白银市平川区农业技术推广中心,甘肃白银730913 [2]甘肃省植保植检站,甘肃兰州730000 [3]甘肃省白银市农业技术服务中心,甘肃白银730900

出　　处：《中国植保导刊》2024年第3期32-37,共6页China Plant Protection

基　　金：中央一般性转移支付病虫害控制(2130108)。

摘　　要：通过比较甘肃省白银市黄河流域以南草地贪夜蛾见虫市州和周边宁夏相关市州首发时间与所处纬度发现,随着纬度的升高,草地贪夜蛾首发时间向后推移;草地贪夜蛾成虫和幼虫首发时间和北纬度数具有显著性正相关,纬度升高1°N,成虫和幼虫首发时间平均推迟5.2 d、9.3 d。地处黄河上游的白银市,近年草地贪夜蛾成虫首发时间相比南部的陇南市、天水市、庆阳市、甘南州分别迟35~43 d、迟32 d、迟10~59 d和早1 d;与相接壤的平凉市、固原市、中卫市和兰州市比较,分别迟2~20 d、迟4~7 d、迟2~29 d和早1 d;白银市近年草地贪夜蛾首发地点均在黄河河谷一带,随后扩散到沿黄灌区的玉米田发生为害。By comparing the date and latitude of the initial detection of fall armyworms in areas south of the Yellow River in Baiyin,Gansu Province,we found that as the latitude increased,the onset of fall armyworm was delayed.There was a significant positive correlation between the first detection date of fall armyworm adults and larvae and the number of northern latitudes.On average,when the latitude increased by 1°N,the onset time of adults and larvae was delayed by 5.2 days and 9.3 days,respectively.In Baiyin City,in the upper reaches of the Yellow River,the invasion of fall armyworm took place 35-43 days,32 days after Tianshui City,and 1 day earlier than Qingyang City and Gannan prefecture.In Baiyin City,situated in the upper reaches of the Yellow River,the onset of fall armyworm took place 35-43 days after Longnan City,32 days after Tianshui City,10-59 days after Qingyang City,and 1 day earlier than that of Gannan Prefecture.When compared to Pingliang City,Guyuan City,Zhongwei City,and Lanzhou City,it showed a delay of 2-20 days,4-7 days,2-29 days,and an advancement of 1 day,respectively.In recent years,the Yellow River valley area has been the first place of fall armyworm occurrence in Baiyin City,followed by the corn fields along the Yellow River irrigation area.

关 键 词：草地贪夜蛾 北纬 首发时间 

分 类 号：S435.132[农业科学—农业昆虫与害虫防治]