防虫网
- 网络Insect screen;insect net
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以Navier-Stokes方程为基础,运用计算流体动力学软件CFX对华东地区典型结构的连栋塑料温室内的自然通风流场进行了三维稳态模拟,分析了防虫网对温室内自然通风流场的影响。
Based on Navier-Stokes equation and with CFX software as analyzing means , 3D static simulation of natural ventilation airflow in multi-span plastic greenhouse was conducted to analyze the influence of insect-proof screens on airflow trait .
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覆盖防虫网可以有效的阻隔蚜虫,在移栽后40d田间调查,覆盖纱网处理的烟草上均无蚜虫发生。
Insect-proof screen could obstruct aphids effectively . There was no aphid on tobacco with insect-proof screens 40 days after transplanting . It inhibited the incidence of CMV and PVY completely .
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防虫网对点型感烟火灾探测器迟滞时间的影响
The influence of mask on lag time of point fire detector
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防虫网在蔬菜生产中的应用
The Application of Off-insect Net in Vegetables Production
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频振式杀虫灯和防虫网、性诱剂配合使用,能起到更好地诱虫效果。
Equated with pest control net and sex pheromone , the performance is much better .
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防虫网在西瓜生产上的应用研究
Study on net application in watermelon production
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高温季节不同防虫网覆盖方式下的设施环境温湿度变化规律
Variation Regularity of Temperature and Humidity in Different Covering Methods with Fly Net in Hot Season
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防虫网覆盖下气象因子的变化及相关分析
Change of Meteorological Factors and Correlative Analysis under the Condition of Net for Protection against Insects
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通过实验研究了防虫网对报警迟滞时间的影响程度,提出了根据环境合理选择点型感烟探测器的方法。
Studies the influence of mask on lag time , and introduces the optimize method of the usage of point fire detector based on the character of environment .
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网室栽培条件下,对照的烟苗带毒率都在30%以上,防虫网等避蚜防病效果显著。
When cultivated in netting , the ratio of virus-carrier tobacco seedling of comparison treatment was over 30 % , but the ratio of above three measures was very low .
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建立了装有防虫网温室自然通风温度预测分析模型,在此基础上,应用脉宽调制方式和模糊+PI控制算法,对气动开窗位置控制系统进行了仿真研究和控制系统开发研究。
In order to provide information for climate control of greenhouse , a model was developed to predict the variation of air temperature in the naturally ventilated greenhouse equipped with insect-proof screen .
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利用设施大棚防虫网技术,栽培甜瓜等有较高附加值的经济作物,可以较好地实现农产品无公害化生产,稳定与调控产量。
Studies showed that using horticultural facilities and fly net technique to grow value-added crops such as melons , non-polluting production was well carried out , and farm production could be stabilized and regulated .
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试验总结出杂交授粉时间在上午6:30至8:30,采用全程防虫网覆盖、吊蔓栽培技术,可提高坐果率并延长种胚发育时间,改善南瓜属远缘杂交亲和性。
Trails showed that the best pollination time was in A. M 6:30-8:30 , cultivation techniques of fly net covering in the whole course and slinging vine could improve fruit rate and lengthen embryo development time , which improved compatibility of Cucurbita interspecific hybridization .