植物病害标本的采集制作与保存（Collection, making and preservation of plant disease specimens）.docVIP

下载本文档

2
0
约2.8万字
约 19页
2017-09-23 发布于河南
举报
版权申诉

植物病害标本的采集制作与保存（Collection, making and preservation of plant disease specimens）.doc

1、有哪些信誉好的足球投注网站（book118）网站文档一经付费（服务费），不意味着购买了该文档的版权，仅供个人/单位学习、研究之用，不得用于商业用途，未经授权，严禁复制、发行、汇编、翻译或者网络传播等，侵权必究。。
2、本站所有内容均由合作方或网友上传，本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺！文档内容仅供研究参考，付费前请自行鉴别。如您付费，意味着您自己接受本站规则且自行承担风险，本站不退款、不进行额外附加服务；查看《如何避免下载的几个坑》。如果您已付费下载过本站文档，您可以点击这里二次下载。
3、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等，请点击“版权申诉”（推荐），也可以打举报电话：400-050-0827(电话支持时间：9:00-18:30)。
4、该文档为VIP文档，如果想要下载，成为VIP会员后，下载免费。
5、成为VIP后，下载本文档将扣除1次下载权益。下载后，不支持退款、换文档。如有疑问请联系我们。
6、成为VIP后，您将拥有八大权益，权益包括：VIP文档下载权益、阅读免打扰、文档格式转换、高级专利检索、专属身份标志、高级客服、多端互通、版权登记。
7、VIP文档为合作方或网友上传，每下载1次，网站将根据用户上传文档的质量评分、类型等，对文档贡献者给予高额补贴、流量扶持。如果你也想贡献VIP文档。上传文档

植物病害标本的采集制作与保存（Collection, making and preservation of plant disease specimens）

植物病害标本的采集制作与保存（Collection, making and preservation of plant disease specimens） Collection, making and preservation of plant disease specimens Plant disease specimens are indispensable in the teaching of plant pathology in higher agricultural colleges. They are intuitive and free from seasonal and regional restrictions in teaching. Therefore, the collection, manufacture and preservation of plant disease specimens are essential knowledge and skills in the experimental teaching of plant pathology. 1 collection of plant disease specimens In the north, because of the distinct seasons and rich varieties of crops, plant diseases occur frequently, and most plant disease specimens can be collected from the fields. However, the occurrence of disease has a certain regularity, and it is necessary to fully grasp the seasonal pattern of disease occurrence and the growth of host, in order to harvest symptoms typical samples. 1.1 tools for collection of disease specimens Plant disease occurs mostly in root, stem, leaf and fruit, so the tools used for different parts, commonly used tool knife, scissors, hoe, saws, and specimen clamp, specimen box, paper, small specimens of glass bottles, paper bags, labels and records etc.. 1.2 collection of specimens Field collection was divided into season collection and host collection. Seasonal collection is based on diseases that occur only once in a particular period of the year. Such as powdery mildew with sexual stage, wheat powdery mildew can be collected every year in 5-6 months; the gray mold of plant is easy to come into being under the condition of low temperature and rain, and it is easiest to pick up every 3-5 months. According to the host acquisition mainly for a wide range of host diseases such as downy mildew, can be found in the leaves of many plant diseases, common with lettuce, grapes, cabbage etc.; epidemic diseases such as tomato and potato, pepper etc.. 1.3 records of specimens collected In order to distinguish the different