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在烏魯木齐地区,有翅甘藍蚜的迁飞高峯期与大白菜幼苗花叶病的发生密切有关。如迁飞高峯期在极易感病的大白菜幼苗初期(7月下旬),則病害发生普遍而严重;若迁飞高峯期推迟到8月中旬,則病情显著減輕。 1960至1963年研究观察結果指出,烏魯木齐地区6月份及8月上旬的降雨量,对有翅甘藍蚜在整个生长季节中的发生量、迁飞量与迁飞高峯期,有直接的影响,是决定本地区大白茶花叶病大区流行程度的主要因素。甘藍面积的扩大、毒源与蚜源距离的縮短、甘藍的零散栽种,职及种植甘藍的年数增多等情况,是促使大白菜花叶病小区流行程度更趋严重的因素。在病情特重的烏魯木齐地区,采用大白菜晚播措施,不能达到減輕病害的目的。
In Urumqi, the peak of the migration of winged cabbage aphid is closely related to the occurrence of mosaic leaf disease in Chinese cabbage. For example, in the early stage (late July) of highly susceptible Chinese cabbage seedlings at the peak of migration, the occurrence of diseases was widespread and serious; if the peak of migration was postponed until mid-August, the condition was significantly alleviated. The results of the 1960-1963 study indicated that the rainfall in June and early August in Urumqi had a direct impact on the occurrence of the winged cabbage aphids throughout the growing season, Influence, is the main factor in determining the prevalence of Mosaic disease in the region. The expansion of cabbage area, the shortening of the distance between the poison source and the aphid source, the sporadic planting of cabbage, the increasing number of years of service and the growing of cabbage are the factors that promote the epidemic of cabbage mosaic disease more serious. Urumqi in special emphasis on the disease area, using late sowing cabbage measures, can not achieve the purpose of reducing disease.