安徽农业科学2012，Vol.40Issue(25)：12530-12532,3.
烟草赤星病病原菌侵染的气象条件分析
Analysis of Meteorological Condition for Infection of the pathogen of Tobacco Brown Spot (Alternaria alternate)
摘要
Abstract
[Objective]The aim was to study the change law of agronomic characters of winter wheat under different conditions of soil water.[Method]With the winter wheat variety Jimai 20 as experimental material, the variation of plant height, panel length and dry weight of organs were studied, and the relationship between agronomic characters and moisture content in soil was studied.[Result]Under the conditions of slight drought stress, the stem height was 63.4% -73.2% of that under appropriate moisture, while the internode length under ear increased by 9. 2%. Under severe drought, the length of internode under ear got shorter, while the length of penultimate and the third internode from top decreased firstly and then increased. The dry matter accumulation of stem, leaves and spikelet decreased while that of root increased. The length of the internode under ear, penultimate and the third intemodes from top increased firstly and then declined during the soil moisture pro cessing from appropriate to waterlogged, and also the variation of dry matter of organs.[Conclusion]The research provides theoretical basis for study on the water-saving and high yield of wheat.关键词
烟草赤星病/侵染/气象条件/贵州省Key words
Tobacco brown spot/Infection/Meteorological conditions/Guizhou Province分类
农业科技引用本文复制引用
莫建国,陈庆园,于飞..烟草赤星病病原菌侵染的气象条件分析[J].安徽农业科学,2012,40(25):12530-12532,3.基金项目
黔科合重大专项(字[2011]6003号) （字[2011]6003号）
国家自然科学基金项目(41040039). （41040039）
