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河北省农业植保部门根据秋季蔬菜病虫害发生程度和冬季气候预测,2008-2009年冬季保护地蔬菜病虫害总体为偏重发生。据了解,今年冬季该省保护地蔬菜冻害、瓜打顶、沤根、化瓜等生理病害将在保温性能差的棚室严重发生,出现时期将与连阴天时段吻合;低温型侵染性病害中以灰霉
According to the degree of occurrence of pests and diseases in winter and the prediction of winter climate in autumn, the agricultural crop protection departments in Hebei Province put emphasis on vegetable pests and diseases in the protected areas in 2008-2009. It is understood that this winter, the protection of vegetables in the province of frozen vegetables, melon topping, root, melon and other physiological diseases will occur in poor insulation greenhouse serious occurrence of the period will coincide with the even cloudy days; low temperature-type infectivity Disease to gray mold