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本文根据北方冬油菜病毒病流行规律,提出了“调整播种期,重视苗期治蚜,隔离毒源,种植抗病品种,加强抗病栽培”的综合防治方法。就其方法而言,与长江流域区具有共同性。但侧重点和具体内容不尽相同。这是由北方冬油菜区的特点所决定的。 1.北方冬油菜区秋季气温下降迅速,病毒病的为害程度与油菜播种期关系非常密切,调整播种期是预防油菜病毒病的一项主要措施。
According to the epidemic rule of winter rape virus disease in North China, this paper puts forward a comprehensive prevention and cure method of “adjusting seeding period, attaching importance to treating aphids in seedling stage, isolating source of poison, planting resistant varieties and strengthening disease-resistant cultivation”. As far as its method is concerned, it has commonality with the Yangtze River Basin. But the emphasis and specific content vary. This is determined by the characteristics of the northern winter rapeseed area. 1. The northern winter rapeseed area in autumn temperatures dropped rapidly, the damage degree of virus disease and rapeseed sowing period is very close, adjust the sowing period is to prevent rapeseed virus is a major measure.