五种杀虫剂对烤烟蚜虫的田间药效试验

来源 :四川农业科技 | 被引量 : 0次 | 上传用户:bbchy
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
烟蚜是烤烟生产上危害最严重的害虫之一,烤烟从育苗到采收结束,都有烟蚜危害。烟蚜不仅刺吸烟株汁液,影响烟株生长发育,使受害烟株生长缓慢,植株矮小,叶片卷缩、变小、变薄,且被害烟叶调制后缺乏光泽,容易破碎,叶片变薄,品质下降。此外,有翅蚜烟蚜除了直接刺吸烟株汁液对烟株进行危 Aphids are one of the hardest-hit pests in flue-cured tobacco production. Flue-cured tobacco is endangered by aphids when it is raised from seedling to harvest. Aphids not only thorn smoking tobacco plant juice, affecting the growth and development of tobacco plants, so that victims of tobacco growth slow, short plants, leaf curling, smaller, thinning, and the lack of luster after conditioning the tobacco leaves, easy to break, thinning, quality decline. In addition, the winged aphid aphid in addition to direct thorn smoking tobacco plant juice at risk
其他文献
Mitsubishi Rayon Co.,Ltd.announced January15th the establishment of Mitsubishi Rayon(Shanghai) Co.,Ltd.to oversee corporate gover-nance and risk management at
汽车电子大致可分为以下几大类: 汽车发动机电子控制系统(EMS)。汽车发动机电子控制是汽车电子产品的核心。这是国外最早开发的一项汽车控制技术。EMS的研制开发是由于汽车
In January 2009 the Non-shaft Underground Coal Gasification(UCG) Technology jointly developed by ENN Group and China University of Mining Technology (Beijing)
Expansion of capacity Demand for butyl rubber in China has grown rapidly in recent years.The apparent consumption of butyl rubber was 67 000 tons in 2002 and r
Dideoxy-2’-fluoro-3’-hydroxymethylarabinofuranosylthymine 10 and cytosine 12 were synthesized from L-xylose and were found to be inactive against HIV-1 in acu
大众文化里,流行音乐最能反映出一个时代中人们的精神风貌了。许巍和汪峰都是曾经的摇滚歌手,在摇滚乐日渐衰微的今天,他们的作品却获得了广泛的流行。这一方面由于他们成功
A WC-supported S_2O 2-_8/ZrO_2(PSZ) catalyst was prepared and characterized by means of XRD, BET, FTIR and XPS. The isomerization of n-pentane over the catal
From the dried aerial part of Parepigynum funingesis Tsiang et P. T. Li (Apocynaceae), a new cardiac glucoside, named parefuningoside (1) had been isolated. It
文章介绍云南省曲靖公路管理总段国省、干线公路沥青路面大修采用旧沥青路面材料厂拌热再生技术施工,既保证工程质量符合规范要求,又对不可再生资源的再生利用,节约了成本,减
郭新生和李世英,这夫妻俩从志趣到性格都是那么地不同,却也幸福地、有滋有味地携手走过了大半辈子。郭新生,是个不拘小节,活得“很不细腻”的山东大汉;而李世英,这位本姓爱