蔬菜病害的类型与特点

来源 :云南农业 | 被引量 : 0次 | 上传用户:huangyq_002
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
蔬菜病害的类型与特点沾益农场655031王汝娟蔬菜病害的发生与流行是多种因素综合作用的结果。导致某种蔬菜病害发生的主导因素叫做病原,按病原可分为非侵染性病害和侵染性病害两大类。一、非侵染性病害:这类病害主要是由于环境条件不适而引起。如营养物质和水分缺... Types and characteristics of vegetable diseases Zhanyi Farm 655031 Wang Rujuan The occurrence and prevalence of vegetable diseases are the result of a combination of many factors. Lead to a vegetable disease occurs the leading factor is called the pathogen, according to the pathogen can be divided into two categories of non-invasive diseases and infectious diseases. First, non-infectious diseases: These diseases are mainly caused by environmental conditions caused by discomfort. Such as lack of nutrients and moisture ...
其他文献
  The ophiobolins are a group of sesterterpenes with novel structures of a tricyclic [5· 8 · 5] ring system.And they showed a broad spectrum of inhibitory a
会议
逆行武汉的每一个新闻工作者都很勇敢,而且当疫情的乌云散去,再来回望这个城市的时候,我们心中都有着一种特殊的情感.就像我身上穿的这身衣服,它是我在武汉抗疫报道中穿得最
期刊
九江长江大桥216m梁及三大拱合拢处构件的所有栓孔均在工厂一次钻足孔径。在工地施工过程中采取一系列有效措施达到了精确合拢,本文介绍了该桥216m梁及三大拱的安装合拢方案
抒情是尹马诗歌文字呈现的一个核心,是其诗歌组织人、物及事的重要纽带.透过尹马诗歌抒情唯美的表象,我们同样可以看到现实生活的真相.尹马诗歌关注现实,关注他生活的这片土
1942年,我在八路军一二○师侦察科当参谋,与贺老总朝夕相见,他那爱兵如子的感人事迹不断激起我对他的敬仰之情。 师侦察连机枪班班长张映清,是山西兴县木兰岗村人,家中只有
今年的5月27号,一个消息振奋着大家!那就是2020年珠峰高程测量登山队的8位攻顶队员,全部成功登顶珠峰,并且将鲜艳的五星红旗插在珠峰峰顶,随后开展各项测量工作.rn而今天我要
期刊
  A simple and sensitive high performance liquid chromatographic method coupled with electrospray ionization mass spectrometry (HPLC-ESI-MS) was developed and
会议
  Natural product extracts have been found to provide a valuable source of molecular diversity which is complementary to that provided by traditional syntheti
会议
  High-Performance Liquid Chromatography (HPLC) is widely used in biochemistry and analytical chemistry to identify, quantify and purify the individual compon
会议
如今关于壁画,除了壁画的委托者与被委托者不得不互相揭示自己的见解更加高明一些之外,已经极少听人谈起壁画的事。委托与被委托双方所关心的内容又大致仅限于题材、样式、