Potato temperature requirements: tuber growth is suitable for temperature 16 °C ~ 18 °C, when the temperature is higher than 25 °C, tubers stop growing; the optimum temperature for stem and leaf growth is 15 °C ~ 25 °C, more than 39 °C to stop growing. Therefore, when the temperature is higher than 25°C, the tubers at the top of the stolons stop growing. At this time, the organic nutrients produced by the leaves are all used for the growth of the stolons and stems and leaves, which results in the growth of the stems and leaves, and the length of the stolons, resulting in single knots. There are few potatoes. In order to avoid this phenomenon, the following points should be noticed in the cultivation of potatoes: 1 timely sowing. 2 Note that the soil thickness is not less than 12 cm. 3 topdressing nitrogen fertilizer should not be too late.
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