上海人口密度大,平均每人占有常年蔬菜生产土地面积很小。在蔬菜生长适宜的月份,蔬菜供需较平衡,但在8-10月由于受气候条件的影响较大,产量不稳,供求矛盾突出。俗称“夏淡季”。因而,从农业气象角度分析蔬菜“夏淡季”的发生和形成原因,进行预报,将有利于农、商二部门共同采取相应有效措施,趋利避害,提高单产,及时做好调拨工作,改善市场供应。 Shanghai has a large population density with an average area of ​​peasants possessing perennial vegetables. In the month when vegetables grow well, the supply and demand of vegetables is more balanced, but in August-October, due to the influence of climatic conditions, the output is unstable and the contradiction between supply and demand is outstanding. Commonly known as “summer off season.” Therefore, analyzing the occurrence and formation of vegetable “summer and light season” from the perspective of agricultural meteorology and forecasting will be beneficial to the joint efforts of both agricultural and commercial sectors to take appropriate and effective measures to reduce losses and increase yields, to make timely allocation and improvement Market supply.