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河南省植物病理学与现代农业学术讨论会

作者：王振跃施艳李洪连河南农业大学植物保护学院

玉米青枯病,又名茎腐病、茎基腐病,是世界玉米区普遍发生的一种土传病害,国内外学者们先后对病原菌种类、发病规律、病原菌接种技术与抗病性、防治措施等方面进行了研究[1]。近年来该病在我国一些地区又有加重的趋势,严重地块发病率达80... 详细信息

玉米青枯病,又名茎腐病、茎基腐病,是世界玉米区普遍发生的一种土传病害,国内外学者们先后对病原菌种类、发病规律、病原菌接种技术与抗病性、防治措施等方面进行了研究[1]。近年来该病在我国一些地区又有加重的趋势,严重地块发病率达80%-90%,甚至绝产。已对玉米的安全生

关键词： Maize stalk rot control effect nutrition element

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Study on element Contents in Tobacco Leaves from Different Positions of Tobacco CB-1

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Agricultural Biotechnology 2022年第6期11卷 119-125页

作者： Caijun XIE Shilei ZHANG Deqing CHEN Penghui LYU Wensheng LIN Jianrong ZHENG Jinchai YU Qiuying CAO Siyi CHENG Xueqin ZHANG Yongxin FENG Zenghan XU China Tobacco Hebei Industrial Co.Ltd. Shijiazhuang 050051China Zhangping Branch of Longyan Tobacco Company Zhangping 364400China Research Center of Tobacco and Health University of Science and Technology of ChinaHefei 230052China

[Objectives]This study was conducted to clarify the differences and abundance or deficiency of various elements in tobacco leaves from different positions of CB-1 in Zhangping City,so as to guide the production of precision fertilization.[Methods]The element contents of CB-1 were determined by an X-ray fluorescence spectrometer.[Results]In terms of the contents of carbon,the upper leaves(45.73%)were significantly higher than the cutters(41.53%),and the lower leaves(43.15%)had no significant differences from both of *** the content of oxygen element,there was no significant difference between the cutters(44.77%)and the lower leaves(43.40%),both of which were significantly higher than the upper leaves(40.75%).The contents of nitrogen,phosphorus,sulfur,boron and nickel all increased with the increase of the position,and they were significantly higher in the upper leaves than in the cutters and lower *** contents of potassium,calcium,magnesium,chlorine and silicon all decreased with the increase of the position,and the lower leaves were significantly higher than the cutters and upper *** contents of aluminum,titanium and chromium increased significantly with the increase of the *** contents of strontium,zirconium and arsenic decreased significantly with the increase of the *** element contents of tobacco leaves had significant or extremely significant differences between different parts of CB-1 in Zhangping City *** contents of nitrogen,potassium,calcium,sulfur,chlorine,molybdenum and nickel in tobacco leaves were appropriate,and the contents of manganese and iron were too high,while the contents of phosphorus and copper were slightly *** contents of magnesium,silicon,boron and sodium were too low.[Conclusions]This study can guide targeted fertilization and regulation of element contents in the tobacco leaves from different parts in production,and is of great significance to improving the production,quality and industrial

关键词： CB-1 Positions Lower leaf Cutters Upper leaf nutrition element

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