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武汉地区种植温州蜜柑,除冬季易遭受周期性低温冻害外,果实生长的中期(七、八月份)还常遇到较长时期的持续高温干旱天气,而发生大量裂果,使桔农蒙受巨大经济损失。如1984年有些桔园每亩损失460—2,370斤,减少收入180—940元。为摸清蜜柑裂果的原因,探求防治方法,我们进行了一些调查和研究,现将结果整理如下。
The growth of Satsuma mandarin in Wuhan in winter is vulnerable to periodic low-temperature frost damage. In the mid-term (July and August) of fruit growth, it often encounters prolonged hot and dry weather over a long period of time. loss. For example, some orange groves in 1984 lost 460-2,370 jin per acre and reduced their income by 180-940 yuan. In order to find out the cause of the cracked orange fruit and to explore ways to prevent it, we conducted some investigations and studies. The results are summarized as follows.