查询词典 cotton aphid
- 与 cotton aphid 相关的网络例句 [注：此内容来源于网络，仅供参考]
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70S in the 20th century the lower reaches of the Yellow River has started to move with helping to control the cotton and wheat aphid, 90 during the beginning of artificial propagation, and for the production.
七星瓢虫是鞘翅目瓢虫科的捕食性天敌昆虫，在我国各地广泛分布。20世纪70年代在黄河下游已开始用助迁法防治棉花和小麦蚜虫，90年代开始人工繁殖，并用于生产。
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The spatial aggregations are various under large and small scales in different occurrence stage of cotton aphid.
在不同阶段不同尺度下棉蚜种群的空间格局表现出的聚集程度不同(1)始发期：大尺度下模型始发前期为块金模型，后期为指数模型，表明样本区域内棉蚜种群空间格局始发前期呈随机分布，而后期呈现聚集型分布。
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Transgenic cottons carrying foreign gna gene had significant resistance to cotton aphid .
转gna基因棉花对棉蚜具有显著的抑制能力。
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The results sh~wed that there were significant differences between sexual forms and parthenogenetic forms of cotton aphid with characteristic bands appeared.
棉蚜性蚜人工诱导的试验结果表明：14C和 18'C下能诱导性蚜产生，而 22℃下诱导则不产生性蚜，可以估计棉蚜性蚜产生的临界温度约为 20'C左右。14℃、18℃下随光照时间的缩短棉蚜性蚜比例有提高的趋势。
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The resistant mechanism of cotton aphid to insecticide is relevant to many factories .Such as the susceptibility of target reducing and activity of detoxify enzyme, etc.
棉蚜对杀虫剂的抗性机理涉及到靶标敏感度下降、体内解毒酶系活力升高等多种机理。
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Artemisia fresh: its shredding, adding 10 times the water, boil for half an hour, cooling spray, can control cotton aphid, spider, caterpillar.
艾蒿鲜草：将其切碎，加入10倍的清水，煮半小时，冷却后喷洒，可防治棉蚜、红蜘蛛、菜青虫。
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Insecticide ; quantity variation ; cotton aphid ; control action
杀虫剂；数量动态；棉蚜；控制作用
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Cacumen Platycladi: its broken up, plus the same amount of water rub, squeeze liquid, plus 2 times the water spray can control cotton aphid and stem borers.
侧柏叶：将其捣碎，加等量的水揉搓，榨出原液，再加水2倍喷洒，可防治棉蚜和螟虫。
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In 1982,two field strains of cotton aphid,Aphis gossypii Glov.,werecollected from Dongtai County and Jiangpu County of Jiangsu Province,and testedwith eight insecticides by means of topical application method,recommendedby The Animal Research Institute of Academia Sinica.
1982年在江苏省东台县及江浦县，根据中国科学院动物研究所推荐的点滴法，用八种杀虫剂对田间的棉蚜进行了毒力测定。
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Cotton aphid is a polyagous insect pest. It can produce alatae to migrate or disperse among host plants, therefore cause the enlarged economic losses or plant virus diseases prevailing.
棉蚜是一种世界性害虫，其寄主范围较为广泛，并且可通过产生有翅蚜进行寄主间的转移，造成扩散为害和传播病毒病。
- 推荐网络例句
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Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.
在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。
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In fact,I've got him on the satellite mobile right now.
实际上 我们已接通卫星可视电话了
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The enrich the peopling of Deng Xiaoping of century great person thought, it is the main component in system of theory of Deng Xiaoping economy, it is a when our country economy builds basic task important facet.
世纪伟人邓小平的富民思想，是邓小平经济理论体系中的重要组成部分，是我国经济建设根本任务的一个重要方面。