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Position: Home > Articles > PRELIMINARY STUDIES ON THE RELATIONSHIP BETWEEN TRANSPORT OF WHEAT STRIPE RUST AND THE UPPER AIR CURRENT IN CHINA Acta Phytopathologica Sinica 1993 (3)

我国小麦条锈病菌传播与高空气流关系的初步研究

作者：

谢水仙;汪可宁;陈杨林;陈万权

单位：

中国农业科学院植物保护研究所

摘要：

1982～1984年间每年8月下旬至11月下旬,收集兰州、天水、武都、西宁、拉萨、乌鲁木齐、呼和浩特、丽江、西昌、成都、西安、汉中、宜昌等13个代表性地点的高空气流动向,风速及气流上升与下沉等资料,进一步分析我国主要越夏区的条锈菌源可能传播动向。结果表明,在3000米以下高空,气流复杂多变,向各方向活动,病菌可随气流向各麦区广泛传播;在5500米高空,气流活动以西风为主,占47.5%,其次为西北风,占26.5%,再其次为西南风,占17.6%,而且高空风速达11.3米/秒,这进一步说明3000米以上高空气流对甘、青、宁、川越夏菌源基地由西往东向各个方向吹送条锈病夏孢子更为有利;也说明越夏菌源基地在3000米以下的气流由东往西同样有效。但由于栽培、地理和气候条件的关系,越夏菌源基地以西地区不种冬小麦,向西传播的作用很小。因此,根据高空气流所揭示的动态,确凿阐明了我国小麦条锈病主要越夏菌源基地关键传播时期的菌源是由西往东传播。

译名：

PRELIMINARY STUDIES ON THE RELATIONSHIP BETWEEN TRANSPORT OF WHEAT STRIPE RUST AND THE UPPER AIR CURRENT IN CHINA

作者：

Xie Shuixian Wang Kening Chen Yanglin Chen Wanquan(Institute of Plant Protection,Chinese Academy of Agricultural Sciences)

摘要：

Through analysing the data of 1982～1984 about the trends of the air current of the upper air,its rising and falling and the wind velocity of the 13 geographically representative points, namely Lanzhou,Tianshui,Wudu,Xining,Lasa,Wunumochi,Huhehaote,Lijiang,Xichang, Chengdu,Xian,Hanzhong and Yichang,we discovered that the original source of stripe rust from the main oversummering region dispersed to other wheat belts.In the part below 3000 me tres of the upper air,the current tended to be complex and variable in all directions,so the fun gus followed the air current to appear radially to other wheat belts.After a new race appeared in the oversummering region of the Northwest if the enviromental conditions were favorable,this fungus might disperse to the whole wheat areas.At altitude of 5500 metres,the air current tended to behave in a different way.The frequency of West wind took the first place about 47.5%;the Northwest wind took the second place about 26.5% while the third is Southwest wind about 17.6%.The velocity of the wind was 11.3% metres/sec.in the upper air.It is a fa vorable wind direction for dispersal of uredospores from west to remote parts of east.Further more,due to the limitation of the geographical and climatic conditions,the winter wheat was not able to grow in the west of the oversummering regions.Based upon the above reasons,the wind dispersal of stripe rust by the air current of the upper air from west to east is rather convincible.

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我国小麦条锈病菌传播与高空气流关系的初步研究

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