苜蓿叶象甲自然种群发育积温、发育期预测和最佳防治期预测的初步研究  

Studies on Natural Popular Accumulative Temperature,Forecast Growth Time and Best Prevention Period of Hypera pastica(Cyllenhal)

作　　者：王春华[1] 赵莉[1] 唐玲[1] 王飞[1] 刘长月[1] 刘艳祥 

机构地区：[1]新疆农业大学农学院,乌鲁木齐830052

出　　处：《新疆农业大学学报》2014年第6期474-478,共5页Journal of Xinjiang Agricultural University

基　　金：公益性行业(农业)项目(201003079)

摘　　要：在新疆乌鲁木齐和呼图壁对苜蓿叶象甲第一代自然种群发育积温、发育期预测和种群数量动态预测的研究.结果表明,苜蓿叶象甲在乌鲁木齐地区全世代的发育时间87d,需≥10℃积温为1789.3 ℃·d.直方图法分析,理论发生代数乌鲁木齐为2.14-2.96代（呼图壁为2.21-3.05代）,呼图壁第一代卵、2龄、3龄、4龄幼虫和蛹期的理论高峰时间符合田间实际调查结果.苜蓿叶象甲防治最佳时间为5月17日-5月30日.The accumulative temperature of natural population development for the first generation from H ypera postica (Cyllenhal),prediction of development stage,prediction of dynamic state of population density in Hutubi area and Urumqi area,Xinjiang were investigated.The result indicated that the develop-ment time of the whole generation from H ypera postica (Cyllenhal)in Urumqi area was 87 d,≥10 ℃ ac-cumulative temperature was 1 789.3 ℃?d.Histogram analysis showed that theory occurrence generation was 2.14-2.96 (2.21-3.05 in Hutubi).The eggs of first generation,2nd instar,3rd instar,4th instar larvae and the theoretical ruch hour of pupal instar was accordant with the investigaled result in field in Hutubi area.The best prevention period of H ypera postica (Cyllenhal)was between May 17 and May 30.

关 键 词：苜蓿叶象甲 发育历期 ≥10℃积温 防治期预报 

分 类 号：S433[农业科学—农业昆虫与害虫防治]