noctuid moth larvae that travel in multitudes destroying especially grass and grain
moth whose destructive larvae travel in multitudes
larva of fungus gnat that feed on cereals and other grains; they march in large companies in regular order when the food is exhausted
双语例句
1. Studies on the chitin synthesis pathway genes of the beet armyworm and their utilization.
甜菜夜蛾几丁质合成通路基因的研究和应用。
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2. The mechanism and inducement of plant inducible resistance induced by the beet armyworm were introduced.
介绍了甜菜夜蛾取食诱导的植物抗虫性产生的原因和机制；
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3. Beet armyworm, Spodoptera exigua Hübner outbroke on many vegetable crops and it had become a dangerous pest in recent years.
近些年来，甜菜夜蛾在我国淮河以南地区蔬菜等作物上频繁发生，已成为一种灾害性害虫。
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4. The experiment shows that photoperiod was an important environmental factor affecting armyworm development, reproduction and flight.
说明光周期是影响粘虫发育、殖和飞翔的重要环境因子之一。
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5. Using computer simulating technique and cohort conception, the simulation model of armyworm population dynamics under variable temperatures was built.
应用计算机模拟技术，引入同龄组的概念，建立了适合于估测变温条件下粘虫种群动态的计算机模拟模型。
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6. The rate of parasiting to the oriental armyworm is seriously influenced by the day number of raining of April and of dewing from 11-25, March of last year.
对寄生率影响较明显的为侵染期的降雨日数和前一年线虫脱出高峰期的露日数。
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7. The average and range of pupal weight of beet armyworm Spodoptera exigua (Hubner) fed on artificial diet mainly consisted of soybean, wheat and yeast were 97.
以大豆、小麦、酵母粉为主要原料配成的人工饲料饲养甜菜夜蛾，平均单头蛹重为97。
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8. Radar observations indicated that the stratification occurred in the course of the Oriental armyworm migration. The moths headed southwest in autumn migration.
雷达观测发现粘虫在空中迁飞过程中具有成层现象，并有较强的秋季回迁定向行为，其头部总是朝向西南；
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9. The structure and function of the internal reproductive organs of the armyworm moth especially the formation of spermatophore have been described in this paper.
本文叙述了粘虫生殖系统各器官名称、功能及授精过程中精包的形成。
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10. The roles of plant inducible resistance in biological control of the beet armyworm and the research exploring new resistant varieties of crops in future were also discussed.
展望了植物诱导抗虫性在甜菜夜蛾的生物防治和新型抗虫品种开发等领域的应用前景。
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11. The beet armyworm, Spodoptera exigua (Hubner), is a polyphagous noctuid of worldwide importance that feeds on various agricultural crops, including vegetable, cotton and ornamental.
甜菜夜蛾隶属于鳞翅目夜蛾科，是一种世界性分布、杂食性重要农业害虫，主要危害蔬菜、棉花和观赏植物。
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12. The beet armyworm, Spodoptera exigua (Hubner), is a polyphagous noctuid of worldwide importance that feeds on various agricultural crops, including vegetable, cotton and ornamental.
甜菜夜蛾隶属于鳞翅目夜蛾科，是一种世界性分布、杂食性重要农业害虫，主要危害蔬菜、棉花和观赏植物。
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The extracts of Xanthium sibiricum had insecticidal effect on armyworm. 苍耳提取物对粘虫具有一定的杀虫效果。
On contrast, the anti-feeding effects of the extracts from petroleum ether and ethyl acetate to small vegetable-moth are smaller than those to armyworm. 但对小菜蛾而言，石油醚萃取物和乙酸乙酯萃取物的拒食作用不如对粘虫作用明显。
