浙江台州西兰花小菜蛾种群数量运动规律研究  

Study on population dynamic characteristics of Plutella xylostella L. on broccoli in Taizhou, Zhejiang Province

作　　者：任典东 汪恩国 王永才 余山红 

机构地区：[1]浙江省三门县农技总站,浙江三门317100 [2]浙江省临海市植保站,浙江临海317000 [3]浙江省临海市农科所,浙江临海317000 [4]浙江省台州市农科院,浙江临海317000

出　　处：《中国植保导刊》2013年第4期35-37,共3页China Plant Protection

基　　金：台州市科技计划项目(071TG04)

摘　　要：于2001～2011年应用性诱剂监测方法对小菜蛾种群数量运动规律及季节性消长规律进行了长期定点系统监测研究。结果表明,西兰花小菜蛾种群运动态势在监测的11年中呈螺旋式下降,年度大发生频率约30%;生长季节其发生消长随西兰花生育期推进而逐渐加重,全季主要有两个发生盛期,第1个盛期在西兰花的莲座生长期和花蕾生长期,发生频率47%,第2个盛期在结球采收期,发生频率40%;气温(T)对小菜蛾种群数量(M)发生存在极显著相关关系,其关系模型为:M=0.221T+0.0457或M=-0.034T2+1.4912T-9.4889。Population dynamic characteristics and seasonal variation of PluteUa xylostella L. on broccoli were monitored by pheromone attracting from 2001 to 2011 to discover the causes of P. xylostella damage. The results showed that population movement cycle of P. xylostella showed spire descend trends, and its annual outbreak frequency was about 30%. Seasonal variation of P. xylostella on broccoli was getting heavier with broccoli growing. There were two high occurring stages, first stage was in rosette and bud stage of broccoli with 47% of occurring frequency, and the second stage was in folding and harvest time of broccoli with 40% of occurring frequency. The temperature （T） and population amount （M） had signifi- cant relation as model followed M=0.221T＋0.0457or M=-0.034T2 ＋1.4912T-9.4889.

关 键 词：西兰花 小菜蛾 种群数量运动规律 影响因子 

分 类 号：S431[农业科学—农业昆虫与害虫防治]