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有些社队提出井水温度低(一般9～12℃).而夏季白天气温高(多在30～35℃),两者差异很大,能否损坏庄稼,影响增产。为了研究这个问题,1972年我们在锦县仁字大队进行了井水灌溉对地温和作物生长影响的试验。试验方法:灌水前在小区安设地面、地中温度表,分别观测地面5、10、15.20、40厘米等6个层次地温。灌前记录各层地温,灌后按8、14、20点定时观测地温变化,地温回升至稳定温度后停测.并在灌水过程中用水温计测量井水温度
Some comrades put forward that the temperature of well water is low (usually 9-12 ℃), while the high daytime temperatures in summer (more than 30-35 ℃) make a big difference between the two and can damage crops and affect yield. In order to study this problem, we conducted a test of the effect of well water irrigation on the growth of mild crops in Jinxian Renzi Brigade in 1972. Test Methods: Before irrigation in the community set up the ground, the ground temperature meter, respectively, the ground 5,10,15.20,40 centimeter ground temperature and other six levels. Before filling irrigation, ground temperature was recorded, and the ground temperature was observed at 8,14 and 20 o’clock intervals after the irrigation, the ground temperature was recovered to a stable temperature and then stopped. The temperature of well water was measured by a water temperature meter