论文部分内容阅读
本文首次报道滇南柱果种植区内严重为害柱果嫩梢的杧果小丽木虱。卵产在紫色嫩叶的表面和嫩梢。灰黄色若虫为害幼嫩组织和顶叶。若虫从肛门排泄出无色粘稠粪滴,粘湿被害枝叶下方的表土。为害结果导致嫩梢干枯和嫩叶卷曲并脱落。在后来的2~3年内不座果。成虫取食嫩叶中脉和缘脉,形成小型虫瘿,叶缘上卷。经观察害虫的生活史,卵、若虫和成虫期分别为7~8天,20~25天和330天左右。在2月底到3月中旬,每头雌虫平均产卵180粒。3月下旬至4月初若虫孵化。4月中旬至翌年3月上旬果园内可见到成虫。害虫每年发生一代,成虫越冬。用0.01%的20%速灭杀丁乳油喷雾,对若虫和成虫有良好的防效。
This paper reports for the first time in the southern Yunnan pillar growing area of serious damage to the young shoots of barberry fruit psyllids. Oviproduced on the surface of young purple leaves and tender shoots. Gray-yellow nymphs damage young tissues and parietal lobe. Nymphs excreted from the anus colorless sticky droppings, sticky wet surface soil below the victim leaves. Damage results in young shoots dry and tender leaves curl and fall off. In the later 2 to 3 years without fruit. Adult feeding young leaves and veins in the veins, the formation of small insects, leaf margin on the roll. The observed pest life history, eggs, nymphs and adult stages were 7 to 8 days, 20 to 25 days and 330 days or so. Between the end of February and mid-March, an average of 180 eggs are laid per female. Nymphs hatch from late March to early April. From mid-April to early March, adults can be seen in the orchard. Pests occur a generation each year, adult wintering. With 0.01% of 20% speed kill butadiene cream spray, nymphs and adults have good control effect.