为筛选最佳生物杀虫剂防治陇南地区核桃星尺蛾,选用不同浓度苦参碱药剂进行试验研究,在室内和林间进行试验,对药物持效期及防效进行对比研究.结果表明:核桃星尺蛾幼虫2龄时应用苦参碱生物杀虫剂2000倍液防治,室内72?h校正杀虫率92.35％,林间72?h校正杀虫率93.45％,持效期14?d,杀虫率达78.7％,是理想的防治核桃星尺蛾的生物杀虫剂.

花椒是甘肃省文县农村经济的支柱产业之一,然而目前花椒产业发展还存在品种混杂、施肥不科学、修剪不到位、病虫害防治不及时、管理粗放等问题.文章主要就当地花椒产业现状、存在的问题及对策进行详细的介绍,提出了文县花椒产业发展的意见和建议.以此指导文县花椒产业科学健康发展,为文县农村脱贫致富奔小康奉献力量.

Four hundred and thirty-six specimens of moths were collected from Longnan olive planting area between 2013 and 2014. Forty-two species belonging to 35 genera,13 families were identified including nine species of Geometridae,nine of Arctiidae,seven of Notodontidae,five of Noctuidae,three of Pyralidae,two of Cossidae,and one of Heliodinidae,Drepanidae,Amatidae,Saturniidae,Lasiocampidae,Sphingidae and Limacodidae respectively. Among them,nineteen were newrecords in Gansu province.

In recent years, diseases and insect pests have been found in part of the olive gardens at Wudu county, Wenxian county and Dangchang county. The occurrence of diseases and insect pests has seriously affected the development and industrialization process. The paper summarized several main diseases and insect pests and the corresponding prevention measures by investigation, observation and prevention experiment in order to prevent and eliminate early and timely.