天气预报 > 其他 > 红薯温度多少就被冻坏
红薯温度多少就被冻坏
更新时间: 2020-08-16 00:00:00  

1、红薯在地里生长着气温0度会被冻坏;

2、红薯喜温怕冷,栽秧时5到10厘米,地温在10摄氏度左右不发根,15摄氏度需5天发根,17到18摄氏度发根正常,20摄氏度3天发根,27到30摄氏度只一天即可发根;

3、气温25到28摄氏度时茎叶生长快,30摄氏度以上时茎叶生长更快,但薯块膨大慢。38摄氏度以上呼吸消耗多,茎叶生长慢,20摄氏度以下时茎叶生长也快,15摄氏度时停止生长,10摄氏度以下持续时间过长成遇霜冻,茎叶枯死。

关键词: 红薯 温度 多少

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