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1 天津市的自然环境基本概况天津市气候介于大陆性气候和海洋性气候之间,四季变化明显。年平均气温11.0～12.5℃,1月份最冷,平均气温为-4℃以下;7月份最热,气温在26℃左右。≥0℃积温4300～4700%,≥0℃生长季始于3月上旬,终于11月下旬;≥10℃活动积温4000～4300℃,≥10℃初日在4月上旬,终日在10月下旬,多年平均降水量577.8mm,主要集中在7～8月份。年平均日照时数在2610～3090h 之间,年太阳总辐射在125～135kw/cm~2之间,年无霜期约为180～190d。初霜冻在10月中旬,终霜冻在4月中旬。冬季负积温-270～-400℃。2 天津市土壤、气候条件对冬小麦生产的影响天津市从西北向东南按地质、土壤类型分6个区域。
1 The basic situation of natural environment in Tianjin Tianjin climate is between the continental climate and maritime climate, significant changes in seasons. The annual average temperature of 11 0 ~ 12 5 ℃, the coldest in January, the average temperature of -4 ℃ or less; July the hottest temperature of 26 ℃. ≥0 ℃ Accumulated temperature 4300 ~ 4700%, ≥0 ℃ Growing season begins in early March and finally in late November; ≥10 ℃ Active accumulated temperature 4000 ~ 4300 ℃, ≥10 ℃ The first day in early April, the last day in late October, The average annual rainfall of 577.8mm, mainly concentrated in the 7-8 months. The annual average sunshine hours are between 2610 and 3090 hours, and annual solar radiation is between 125 and 135 kW / cm ~ 2. The annual frost-free period is about 180 to 190 days. Early frost in mid-October, final frost in mid-April. Winter negative temperature -270 ~ -400 ℃. 2 Tianjin soil, climate conditions on the impact of winter wheat production in Tianjin from northwest to southeast by geology, soil types are divided into six regions.