Potato stems and leaves enlargement and formation conditions
Tuber enlargement and formation: The temperature of tuber stage directly affects the formation of tubers and accumulation of dry matter. The temperature requirement of potatoes during this period is very strict. The temperature suitable for tuber growth is 17 to 19 degrees. When the temperature difference between day and night is large, the low temperature at night will reduce the respiratory intensity of plants and tubers and consume less energy, which is conducive to photosynthesis during daytime. The yield is transported and accumulated in tubers. The lower temperature at night is more important than the soil temperature in the formation of tubers. When the soil temperature is 16 to 19 degrees Celsius, the low temperature at night will be conducive to tuber formation and enlargement. The temperature difference between day and night in high altitude and high latitude regions is large, and the respiratory intensity of potato tubers has a high yield of high dry matter content in potato tubers. At night temperatures of 25 degrees Celsius, the respiratory intensity of tubers increases dramatically, and nutrients are used to stop growing. Therefore, during the tuber enlargement, timely and appropriate amount of water should be adjusted to adjust the soil temperature so that the tuber growth meets the requirements of soil temperature and humidity to increase production.
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