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- Field population dynamic and optimum control period of Melanaphis sacchari in Chaoyang region, Liaoning 辽宁朝阳地区高粱蚜田间消长规律及防治适期
- The field population dynamic and optimum control period of wheat aphids in Chaoyang Region, Liaoning 辽宁省朝阳地区小麦蚜虫田间消长规律及防治适期
- SPECIES AND FIELD POPULATION DYNAMIC OF MAIN INSECT PESTS AND THEIR NATURAL ENEMIES ON GARDENIA JASMINONIDES ELLIS 红栀子主要害虫与天敌种类及田间种群动态研究
- field population dynamic 田间消长规律
- That is to say,IPC is the multiple caus-ing change of population dynamic trend. 控制指数值即为引起种群数量发展趋势发生改变的倍数。
- The population dynamic of Myzus Persicae on Lilium Speciosum was studied. 研究了百合上桃蚜种群数量季节变动动态。
- According to the field test, the paper reported the effects of application of Methamidophos + Deltamethrin in different time on population dynamic of the brown planthopper and its predatory (spiders, ?Cyrtorrhinus lividipennis? Reuter et al ). 本文以田间试验数据全面反映不同时间施用甲胺磷+溴氰菊酯对褐飞虱及其捕食性天敌蜘蛛、黑肩绿盲蝽等种群动态的影响。
- In addition, S. guani could form field population in the poplar forest after it was released.Poplar longicorn was also sustained. 此外,肿腿蜂释放后可在杨树林间形成野外种群,并对杨树天牛具有很好的持续控制作用。
- Insect population dynamics has always received much attention. 昆虫种群动态的研究一直受到重视。
- Population Dynamics Prediction Techniques of Lymantria dispar L. 舞毒蛾种群动态测报技术。
- Population Dynamic of Aphids and Predatory Natural Enemies in the Seedling Stage of Bupleurum Chinese Dc. 柴胡苗期蚜虫及捕食性天敌种群消长动态研究。
- A Study on the Population Dynamics of Rhopalosiphum padi on Wheat. 小麦禾缢管蚜种群动态的研究
- I use the area-constrained method to monitor salamander population dynamic in the Sister Ponds, Chiayi Hsien. 在遮蔽物下的基质方面,山椒鱼偏好碎石基质,但避免使用植物根系组成者。
- Methods Adult mortality of Aedes albopictus , sensitive and field population collected from Guangzhou,was observed after ground ULV exposured to beta cypermethrin in laboratory and in field. 方法 在实验室、现场分别进行高效氯氰菊酯超低容量喷雾 ;观察对敏感白纹伊蚊及广州市城区白纹伊蚊成蚊的杀灭效果。 结果 在实验室测得高效氯氰菊酯当喷药量为 0 .;4ai·mg/m2 时;对广州市城区白纹伊蚊成蚊的致死率为96
- Object is applied is populated dynamically. 对象应用到的节点。
- The results indicated that differences in population dynamic, development of spike and floret, and grain filling existed between small and large spike wheat cultivars. 结果表明.多穗型和大穗型冬小麦品种在群体动态变化、小穗和小花发育、籽粒灌浆过程等方面有较大差异。
- Age structure is a foundational base to study the population dynamics. 年龄结构是研究种群动态的重要基础。
- The field artillery pounded away at the for tress. 野战炮兵连续炮击那座要塞。
- He used aphid fecundity data to elucidate the theoretical effects of antibiosis on insect population dynamics. 他利用蚜虫繁殖力资料说明了抗生作用对虫口动态的理论效应。
- The age models established by the growth ring and carapace length or carapace width predict that the large tortoise (carapace length>180mm) may exceed 24 years in field populations of Xinjiang. The expected longevity would be 28 years. 30:34(1991),成体龟数目远大于幼体龟的数目,利用年轮与背甲长度或体宽建立年龄模型,模型显示相同年龄的四爪陆龟,雌体生长速度大于雄体,通过年龄模型推测,背甲长度超过180mm的野生四爪陆龟的年龄可达24年,估计四爪陆龟的期望寿命为28年。