摘要
通过利用昆虫针扎死小幼虫和用蜜糖水诱杀成虫等人为控制措施，设置每个处理斑潜蝇虫量分别为 20、 100、 200、 300、 400、 600头，以此观察美洲斑潜蝇不同虫口密度对黄瓜产量的影响及损失。结果表明，在控制虫口密度范围内，其对黄瓜造成的产量损失率为 0.51％～ 19.20％，并以此测算出在当地生产条件下，美洲斑潜蝇的防治指标为百株虫量 1 050～ 1 190头。
To observe the loss of cucumber yield affected by Liriomyza sativae, seven treatments dealed with different insect densities of 0,20,100,200,300,400 and 600 were respectively made on every 20 cucumber plants, with methods of killing the larvae and the adults using needle and the trapping with sugar water. The results showed that the loss of cucumber yield was from 0.51％ to 19.20％ in the range of controlled insect population density. Based on the result, the controlling threashold of Liriomyza sativae is deduced from 1050 to 1190 insects per hundred cucumber plants.
出处
《植保技术与推广》
2001年第7期5-6,31,共3页
Plant Protection Technology and Extension
