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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。
Between late August and late November of each year from 1982 to 1984, the high-level air movement was collected from 13 representative sites including Lanzhou, Tianshui, Wudu, Xining, Lhasa, Urumqi, Hohhot, Lijiang, Xichang, Chengdu, Xi’an, Hanzhong and Yichang The wind speed and the ascent and descent of air currents, and further analyzes the possible transmission of stripe rust sources in the main summer regions of China. The results showed that at altitudes below 3000 meters, the air flow was complex and varied, moving in all directions. The germs could spread widely to the wheat areas with the air flow. At 5500 meters above sea level, the westerly winds dominated the air flow, accounting for 47.5% of the total, followed by the northwest wind , Accounting for 26.5%, followed by the southwest wind, accounting for 17.6%, and the high-altitude winds up to 11.3 m / s, which further illustrates the 3000 meters above the air flow Gan, Qing, Ning, Chuan Yue summer bacteria base from west to east each The direction of blowing rust rust spores more favorable; also shows that the source of summer bacteria base in the 3000 meters below the air flow from east to west equally effective. However, due to the relationship between cultivation, geography and climatic conditions, the area west of the Xiayashan source base does not planted winter wheat and the effect of spreading westward is small. Therefore, according to the dynamic revealed by the high-level airflow, it is indeed elucidated that the source of bacteria in the key transmission period of the major summer stromal bacterial source base of wheat stripe rust is spread from west to east.