论文部分内容阅读
菰毛眼水蝇Hydrellia magna Miyagi是为害茭白的一种新害虫。本文描述了该虫不同生育阶段的形态特征,系统地研究了它的生物学及发生规律。菰毛眼水蝇主要分布在上海、苏南等地区,以幼虫在茭白残茬内越冬,江苏、上海每年发生4-5代,成虫在茭白的叶鞘上产卵,每雌产卵量约为45-54粒。该虫一般发生5-10月,为害高峰为7月下旬至10月上旬,主发代为第三、第四代。在26℃温度下,卵、幼虫、蛹的历期分别为5.4天、18.2天、7.3天。过冷却点为-6.25℃。此外,研究了该虫的综合防治措施。
Hydrellia magna Miyagi is a new insect pest. This paper describes the morphological characteristics of the pest at different stages of growth and systematically studies its biology and its occurrence. Babylonia are mainly distributed in Shanghai, southern Jiangsu and other regions, the larvae wintering white stubble residue, Jiangsu, Shanghai 4-5 generations a year occurred, the adults in the white leaf sheath sheathing, fecundity per female is about 45-54 tablets. The insects generally occur from May to October, the peak of damage for the late July to early October, the main generation for the third and fourth generations. At 26 ℃, eggs, larvae and pupae were 5.4 days, 18.2 days and 7.3 days respectively. The subcooling point is -6.25 ° C. In addition, the comprehensive prevention and control measures of the insects were studied.