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苹果在哪个季节生长的
更新时间: 2020-10-19 00:00:00  

苹果是喜冷凉、干燥的温带果树,要求冬无严寒,夏无酷暑,年较差小,日较差大。适宜的温度范围是年平均气温九到十四摄氏度,冬季最底温度不低于零下十二摄氏度,夏季最高温度不高于二十摄氏度且不低于十摄氏度,年积温度五千摄氏度左右,生长季节(四到十月)平均气温十二到十八摄氏度,冬季需七摄氏度以下低温一千二到一千五小时,才能顺利通过自然休眠。倘若低温时间不足,将会导致苹果树发叶、开花时间推迟,甚至不萌动,五月鳞片松开脱落,成为枯桩,严重降低产量;绝对低温低于零下三十摄氏度到零下三十二摄氏度,苹果发生冻害等。

关键词: 苹果 哪个 季节 生长

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