检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:陈汉杰[1] 张金勇[1] 涂洪涛[1] 陈冬亚[1] 郭小辉[1]
机构地区:[1]中国农业科学院郑州果树研究所,郑州450009
出 处:《昆虫知识》2009年第3期463-465,共3页Entomological Knowledge
摘 要:在郑州通过室外埋卵观察,草履蚧Drosicha corpulenta Kuwana从1月初开始孵化,孵化后在土里等到2月初开始出土,此时日最高气温在6~8℃之间。若虫出土期约30d,2月中下旬为出土高峰期。经设置14,18,22,26和30℃5个温度梯度观察,草履蚧1龄若虫发育起点温度为7.9℃,有效积温为203.8日.度。利用树干绑缚杀虫药带防治效果达到98%以上。By observing in the field, the giant mealy bug hatched from the beginning of January Zhengzhou. But they stayed in the soil until the beginning of February, when the highest temperature reached about 6 - 8 ℃ . The peak of the larvae climbing up the tree is from the middle to the end of February. Being bred at 14, 18, 22, 26, and 30℃, the development threshold temperature for first instar is 7.9℃, and the effective accumulated temperature is 203.8 degree-day. Treated with pesticide strip on the trunk,the number of larvae can be reduced over 98% on the tree.
分 类 号:S433[农业科学—农业昆虫与害虫防治]
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:3.148.231.72