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山楂粉蝶是近年耒内蒙西部土默川一带果树茅蕾期的重要害虫,开始是野生林、果树害虫,随着果树栽培事业的发展,已转移到西部沿山果园为害。目前有向平川果园扩散的趋势。山楂粉蝶在内蒙西部一年发生一代,以三令幼虫群聚树梢吐丝营巢越冬。翌年4月上旬出巢为害活动,5月上旬化蛹,5月中旬成虫羽化,5月下旬产卵。卵于6月上旬孵化。孵化幼虫7月中下旬进入休眠越冬。幼虫营群集性生活,小令幼虫吐丝性极强,老熟幼虫具有假死性。幼虫发育与不同果树的物候期有密切的关系,以黄太平、杏、李子等果树上的发育较快;苹果梨树、大苹果树较慢。老熟幼虫化蛹对场所没有严格选择性。蛹有黄型蛹、黑型蛹之分。成虫于白天活动,中午最盛,成虫取食的蜜源植物种类很广,如葱花、马莲等杂草,以及十字花科蔬菜作物等。成虫有吸食水的习性。成虫产卵为块产,形状无规律。天敌对山楂粉蝶的抑制作用很大,幼虫期寄生率52.5％,蛹期58.86％,病毒致死率高达42.5％。这为我们开展生物防治山楂粉蝶指出了一条新途径。山楂粉蝶的药剂防治试验于1983年4月25日进行,三种药剂各三个浓度,2.5％溴氰菊酯乳剂(2000,2500,3000)磷胺原油(1500、2000、2500)、20％除虫菊酯(2000、4000、5000),三次重复,试验结果经统计分析每种浓度杀虫效果都达到显著和极显著水平。田间二次重复防治效果与室内基本一致。
In recent years, hawthorn butterflies are important pests of Mao Lei period of fruit trees in the area of Tumochuan in western Inner Mongolia. Starting with wild forests and pests of fruit trees, they have been transferred to orchards along the mountainous orchards in the west along with the development of fruit cultivation. There is a tendency to spread to Hirakawa orchards. Hawthorn pink butterfly occurs in the western part of Inner Mongolia a generation a year, with three orders larvae clustering tree spit breeding nest overwintering. Early April the following year out of the nest harmful activities, in early May pupation, mid adult emergence in May, spawning in late May. Eggs hatch in early June. Incubation larvae into late winter sleep in winter. Larvae camp clustering life, small order larvae extremely strong, mature larvae have a lethality. The development of larvae is closely related to the phenology of different fruit trees. The development of larvae on the fruit trees such as Huang Taiping, apricot and plum is rapid. The apple and apple trees are slower. Mature larvae pupa on the place there is no strict selectivity. Pupa yellow type pupae, black type pupa points. Adult activities during the day, noon is the most flourishing, nectar species of nectar plants eat a wide range, such as green onion, horse lotus and other weeds, as well as cruciferous vegetables and other crops. Adults have the habit of taking water. Adult eggs lay block, irregular shape. Natural enemies had a great inhibitory effect on hawthorn butterflies. The larval stage parasitism rate was 52.5%, the pupal stage was 58.86% and the virus lethality rate was as high as 42.5%. This pointed out a new way for us to carry out the biological control of hawthorn butterfly. The control experiment of hawthorn pollination was carried out on April 25, 1983 with three concentrations of three agents, 2.5% deltamethrin emulsion (2000, 2500, 3000), phosphorus amine crude oil (1500, 2000, 2500), 20% Pyrethrins (2000,4000,5000), three replicates, the results of the test by statistical analysis of each concentration of insecticidal effect reached significant and very significant level. Field repeated the same control effect and indoor basically the same.