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建国三十五年来,天津水稻生产形势几经起伏,1956年全市水稻面积154万亩,比1949年扩大4.4倍。1971年全市水稻平均单产639斤,总产9亿斤,比1949年增长1.6倍,是小站稻面积最大,产量最高的一年。正常情况下,随着水稻技术的提高和生产条件的改善,水稻面积和产量是上升的趋势。1972年以后,水稻面积急剧下降,减少幅度完全受降雨量制约,单产与干旱程度成负相关,丰水年单产创新记录,枯水年单产下降。尤其近年来气候连续干旱,河水断流,地下水
Thirty-five years after the founding of the People’s Republic of China, the situation of rice production in Tianjin experienced several ups and downs. In 1956, the city’s rice area was 154 million mu, an increase of 4.4 times that of 1949. In 1971, the average yield of rice in the city was 639 kg, with a total output of 900 million kg, an increase of 1.6 times that of 1949. It is the year with the largest paddy rice output and the highest output. Under normal circumstances, with the improvement of rice technology and production conditions, rice area and yield are on the rise. After 1972, the area of paddy rice dropped sharply, and the extent of the reduction was completely controlled by rainfall. The yield and drought degree were negatively correlated with the record of record yielding in wet years and the decrease of yield in dry years. In recent years, in particular, the climate has suffered from successive droughts, river water cuts and groundwater