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八、九月淡季是多年来北京市蔬菜生产和供应中存在的重要问题之一。调查总结八、九月淡季蔬菜生产供应状况,分析其形成原因,并在此基础上提出相应的措施,将为合理利用自然气候资源,逐步地、持续地提高淡季蔬菜生产提供科学依据。一、八、九月淡季蔬菜生产供应状况据调查在1978年前8年间,除1972、1975、1977年外,北京近郊八、九两月蔬菜总上市量及平均日上市量均未达到计划指标。上市供应也极不均衡。最高和最低日上市量竞相差2—3倍。其中8月上旬、9月下旬上市量偏旺。8年平均该2旬合计上市量约占整个八、九两月总上市量的40％以上;8月中、下
August and September The off-season is one of the important issues in vegetable production and supply in Beijing over the years. The survey summarizes the production and supply situation of off-season vegetables in August and September and analyzes the reasons for their formation. Based on this, the corresponding measures are put forward, which will provide a scientific basis for making rational use of natural climate resources and gradually and continuously raising the production of off-season vegetables. According to the survey, in the first eight years of 1978, except for 1972, 1975 and 1977, the total market volume of vegetables and the average daily market volume in August and September in Beijing suburbs did not reach the planned targets . Listing supply is also very uneven. The highest and lowest daily volume competing 2-3 times. Which in early August, late September listing volume. 8 years, the average of the total number of 2-year listing of the total accounting for the entire eight or nine months of the total volume of more than 40%; in August,