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天津市红光农场于1977年7月23日和8月2日两次大雨后,果园长期淹水,造成果树凋萎、枯叶、落叶,甚至死树的恶果,对果树生长发育带来不良影响。现将本场四队的有关材料整理如下。一、果园基本情况本场位于北纬39°7′,东径120°,在天津市区西北方向约30华里,子牙河南岸约3华里。地势较高,平均海拔6～8米。地面坡降(自然)为1/2600左右。土壤构成:
Red farm in Tianjin on July 23, 1977 and August 2 after two heavy rains, the orchard flooded a long time, resulting in wilting fruit trees, dead leaves, deciduous trees and even the dead fruit of the fruit tree growth and development caused by bad influences. The four teams are now related materials finishing as follows. First, the basic situation of the orchard The field is located 39 ° 7 ’North latitude and longitude 120 °, about 30 Wuli in the northwest of Tianjin, about 3 Wali in Ziya River. High terrain, the average elevation of 6 to 8 meters. Ground slope (naturally) is about 1/2600. Soil composition: