引言水稻,是天津主要粮食作物之一。平均单产虽较高,但产量年际间变化较大。丰产年,平均亩产可达六百斤以上,不少地块甚至突破了千斤;而欠收年亩产只有二百来斤,平均变幅达到二百斤上下。经验表明,水稻产量的年际波动,除了与栽培面积,水情好坏以及耕作、栽培、品种以及病虫害发生等有关外,在很大程度上是由于各年气候条件的差异所致(稻瘟病等病虫灾害的发生、蔓延也与气象有关)。究竟光、热、水等气候条件对水稻生产的影响如何?是大家所关注的。本文,使用天津杨柳青农场1958～1978年水稻的平均单产资料和同期气象资 Introduction Rice is one of the major food crops in Tianjin. Although the average yield is higher, the output varies greatly from year to year. In the high yield year, the average yield per mu can reach over 600 kilos, and many plots have even exceeded the kilos. In the meantime, the yield per mu has only reached 200 kilos in the last few years, with an average change of up to 200 kilograms. Experience shows that inter-annual fluctuations in rice production are largely due to the differences in climatic conditions in each year except for the area under cultivation, the quality of the water regime and the occurrence of tillage, cultivation, varieties and occurrence of pests and diseases Other pest and disease disasters, the spread is also related to the weather). What is the impact of light, heat, water and other climatic conditions on rice production? It is everyone’s concern. This paper, using the Yangliuqing farm in 1958 ~ 1978 average yield of rice and meteorological data of the same period