Advisers at the University of Illinois Extension say the best planting temperature is fifteen degrees Celsius.
伊利诺伊推广大学的顾问表示，最佳的种植温度是15摄氏度。
Gardening advisers at the University of Illinois Extension say the best planting temperature is fifteen degrees Celsius.
伊利诺伊大学推广部门的园艺顾问表示，播种的最佳温度是摄氏15度。
The extension service says the best formation happens when the soil is between fifteen and twenty-one degrees Celsius.
推广服务部门说最好的块茎形成期是土壤温度介于15 到21 摄氏度。
The extension service says the best formation happens when the soil is between fifteen and twenty-one degrees Celsius.
推广服务部门说最好的块茎形成期是土壤温度介于15 到21 摄氏度。
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