由于气候等方面的原因,合肥市的蔬菜生产客观上形成“春缺”(春淡),“小春缺”(小春淡)和“伏缺”(夏淡)三个规律性的缺口。蔬菜供应,淡旺矛盾很突出。以“春缺”时间最长,从1月至3月底,长达80—90天;“伏缺”次之,从7月下旬至9月中旬,约50天;“小春缺”时间最短,从4月下旬至5月下旬,约30—40天。淡季上市量明显减少,一般只能完成50—60%;旺季上市量成倍增加。为了切实解决三个缺口的蔬菜供应,我们从1970年起开始调查缺菜的主要原因,摸索淡季形成的规律,并从栽培技术上找措施,目前在正常 Due to the climate and other reasons, the vegetable production in Hefei objectively formed the three regular gaps of “spring lack” (spring and fall), “spring lack” (spring break) and “fall short” (summer fall). Vegetable supply, very prosperous contradictions. “Spring lack of” the longest time, from January to the end of March, up to 80-90 days; “Vacancies” followed by, from late July to mid-September, about 50 days; “Spring lack of time” the shortest time, From late April to late May, about 30-40 days. The off-season listing volume decreased significantly, generally only completed 50-60%; peak season listing volume doubled. In order to effectively solve the three shortfalls in vegetable supply, we have started to investigate the main causes of missing vegetables in 1970, explored the law of the formation of the off-season and sought measures from cultivation techniques that are currently under normal conditions