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二点委夜蛾是我国新发生的重要农业害虫,生产上迫切需要各地开展其田间发生为害规律调查及虫情动态变化调查,以期为科学制定其预测预报技术和防控其发生为害奠定基础。我们在温度为(27±1)℃、相对湿度70%左右、光周期为16:8(光:暗)、室内以小麦、黄豆、玉米、花生作物的幼苗进行饲养,建立二点委夜蛾室内实验种群;对其各虫态的生长发育和形态特征进行了系统观测;阐明了各虫态的生长发育和形态特征变化,对生产上指导准确识别二点委夜蛾不同虫态、科学调查其发生为害规律具有重要意义。
It is urgently needed to carry out surveys of its occurrence in the field and the dynamic changes of insects in the fields so as to lay the foundation for the scientific formulation of its forecasting and forecasting technology and the prevention and control of its occurrence. We incubated the seedlings of wheat, soybean, corn and peanut at room temperature (27 ± 1) ℃ and relative humidity of about 70% with photoperiod of 16: 8 (light: dark) Laboratory experimental populations; the growth and development of morphological characteristics of each of its parasites were observed; clarify the growth and morphological changes of each insect state, the production guide to accurately identify different stages of the second instar larvae of the moth, the scientific investigation The occurrence of harm is of great significance.