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夏季,蔬菜拉秧、休闲、换茬;育苗、定植;设施、露地生产并存,又是多种蔬菜病虫发生、为害期。根据北京市气象局气候中心预报:2013年夏季(6-8月),本市平均降水量比常年及近10年偏多;观象台出现大雨以上量级的降水日数比常年和近10年平均值偏多。平均气温接近常年;最高气温大于35℃的天数接近常年和去年,比近10年均值偏少。此气候条件极易导致番茄晚疫病、
In summer, vegetables, seedling, leisure, cropping; nursery, planting; facilities, open coexistence of production, but also a variety of vegetable pests, the damage period. According to the forecast by the Beijing Meteorological Bureau Climate Center: In the summer of 2013 (June-August), the average rainfall in this Municipality is more than that of the normal years and nearly 10 years. The precipitation days above the heavy rainfall in the Observatory are higher than those of the normal and nearly 10-year average Too much. The average temperature is close to normal; the maximum temperature is greater than 35 ℃ days close to normal and last year, less than the average of nearly 10 years. This climatic conditions can easily lead to tomato late blight,