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根据今年农作物病虫越冬基数调查结果和北京市气象局气候趋势预测,结合种植作物品种的抗病性等因素,预计2012年全市粮食作物病虫害总体为中等发生年,麦蚜、吸浆虫等虫害在局部地
According to the survey results of the crops overwintering base of crops and the climate trend forecast of Beijing Meteorological Bureau this year and the disease resistance of cultivated crop varieties, it is estimated that the pests of food crops in the whole city will be moderately occurred in 2012 and the pests such as wheat aphid and midge, Ground