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11.设置和建造阳畦或改良阳畦应注意哪些问题?设置和建造阳畦时要注意以下问题:(1)建造阳畦的时间,最早应在雨季结束以后,以免雨水过多,使畦框遭到冲刷而坍塌。最晚必须在土壤封冻以前畦框能干透为限。如果施工过晚,畦框没有干透便因天寒而冻结,到了第二年春天,随着气温上升,日晒增强,便会化冻而倒塌。北京地区阳畦的施工时期一般在8月下旬以后到9月中旬开始,最晚10月中旬之前结束。修建阳畦的时间除了考虑季节
11. What issues should be paid attention to when setting up and building sunburst or improving sunburst? The following questions should be paid attention to when setting up and building sunburst: (1) The time for sunburst construction should not be excessive at the earliest after the end of the rainy season, And collapsed. The latest must be in the frozen soil before the frame can be dried out. If the construction is too late, the framed box will not freeze and will freeze due to cold weather. By the second spring, as the temperature rises and the sun increases, it will thaw and collapse. The construction period of Yangli in Beijing usually starts after late August and begins in mid-September, and ends by no later than mid-October. The time to build the sundial except considering the season