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呼盟农区甜菜褐斑病的发生危害及防治陈申宽（内蒙古扎兰屯农牧学校，１６２６５０张树森宋清水张友扎兰屯市糖厂）（呼盟植保植检站呼伦贝尔盟在我国东北边疆，位于北纬４７°０５＇～５３°２０＇，东经１１５３１＇～１２６°０４＇，无霜期１２４天左右。当地自然条件...
(Hu Zhantun Farming and Animal Husbandry School, Inner Mongolia 162650 Zhang Shusen Song Qingshui Zhang Youzalun Tun Sugar Factory) (Huyue Plant Protection Station Hulun Buir League in China’s northeast border, Located at latitude 47 ° 05 ’~ 53 ° 20’, longitude 11531 ~ 126 ° 04 ’and frost-free period is about 124 days.