海南省粮库储粮昆虫种类分布调查

为了解海南省粮库储粮害虫的发生情况,通过现场采集,2019~2021年调查了海南全省20个市县(区)的30家储粮企业。鉴定出包括昆虫纲的衣鱼目、鞘翅目、鳞翅目、膜翅目、蛛形纲的拟蝎目共10个目,44种害虫和益虫,其中鞘翅目昆虫有10个科24种,鳞翅目昆虫有4个科5种,衣鱼目、膜翅目各1科1种,蛛形纲的拟蝎目1科1种和真螨目2科2种。比较分析华南地区2017年的虫调资料,明确了海南粮库的代表性储粮昆虫为扁谷盗和谷蠹。

Resistance of Tribolium castaneum to Phosphine and the Relationship between Complete Lethal Concentration and Exposure Time of Phosphine in Hainan Province

[Objeetive] The paper was to investigate the resistance of Tribolium castaneum to phosphine in Hainan Province. [Method] Using the measurement method of phosphine resistance of stored grain pests recommended by FAO, the phosphine resistance of eight strains of T. castaneum adults in Hainan Province was determined. [Result] The resistance coefficients of different strains of ？7. castaneum against phosphine ranged from 612 to 1 045, and all strains reached extremely high resistance level （Rf〉 160）. When the concentration of phosphine was 200 mL/m^3, Rf612, Rf826.4 and Rfl 045 strains had complete lethal time of 8, 9 and 11 d, respectively. [Condusion] T. castarveum in Hainan Province had very strong resistance to phosphine, and the operation scheme of low concentration and long duration should be adopted in elimination of T. castaneum.

海南地区大眼锯谷盗生态习性及防治方法

通过人工饲养大眼锯谷盗和体视镜观察害虫形态,对大眼锯谷盗生物学特性进行研究。通过镜检观察害虫发育各个时期的形态特征,并对害虫不同发育阶段的生理形态和生活习性等进行了系统化的对比,在此研究的基础上提出了害虫综合防治措施。