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1977年元月,我县出现一次罕见低温冰冻(最低气温零下11.1℃),大部分桔树遭受了3—5级冻害,冻死40余万株,产量由1976年的8.5万担骤降至1977年的400担。因此,柑桔防冻栽培,是柑桔生产发展的重大课题。我们通过1977年元月冻后凋查认识到:在我县条件下诸如合理布局,桔园深翻压肥改
In January 1977, a rare low-temperature freezing occurred in our county (the minimum temperature was 11.1 ℃ below zero). Most of the orange trees suffered freezing damage of 3-5 grades and more than 400,000 were frozen to death. The output dropped suddenly from 85,000 in 1976 to 400 in 1977. Therefore, citrus antifreeze cultivation, citrus production is a major issue of development. We passed the freeze in January 1977 after the wreck realized: In my county conditions such as a reasonable layout,