棚室番茄和豇豆受斑潜蝇为害的产量损失测定及其防治指标研究  

Study on yield loss assessments of tomato and cowpea damaged by leafminer in greenhouse and its economic thresholds

作　　者：金辉[1] 王影丽[1] 魏长海[1] 何富才[1] 刘景升[1] 

机构地区：[1]黑龙江省大庆市农业技术推广中心,黑龙江大庆163411

出　　处：《中国植保导刊》2009年第5期25-27,共3页China Plant Protection

基　　金：黑龙江省科技厅重点攻关项目(GB06B105-5)

摘　　要：利用棚室番茄和豇豆田间自然感虫或人工控制虫量的方法,采取在不同虫情指数梯度下对产量的测定,得出产量损失规律。结果表明,斑潜蝇对番茄的为害随着虫情指数的增大番茄的单株产量下降(y1=1168.69-6.7958x1),产量损失率增高(y2=0.5845x2-0.527);防治指标为当虫情指数达到2.18时,就应及时用药防治。斑潜蝇对豇豆的为害,随着虫情指数的增大,豇豆的单株产量下降(y3=413.99-2.41x3),产量损失率增高(y4=0.5843x4-0.3613);防治指标为当虫情指数达到2.76时,就应及时用药防治,为较好的控制全年的为害打下基础。Tomato and cowpea yield loss characteristics in greenhouse were get by both manual release of insect pests and being at nature insect pest condition and evaluating yield losses at different insect pest index. It indicated that yields of individual tomato plant reduced by leafminer with increasing of insect pests index （y1=1168.69-6.795 8x）, and rate of yield losses increased （Y2=0.584 5x2-0.527） as well The economic thresholds were that pesticide should be used while insect pests index reach to 2.18. Yields of individual cowpea plant reduced by leafminer with increasing of insect pests index （y3=413.99-2.41x3）, and rate of yield loss increased （y4=0.584 3x4-0.361 3） as well. The economic thresholds were that pesticide should be used while insect pests index reach to 2.76.

关 键 词：番茄 豇豆 斑潜蝇 产量损失 防治指标 

分 类 号：S436.412.29[农业科学—农业昆虫与害虫防治] S436.43[农业科学—植物保护]