Traditional Culture Encyclopedia - Weather inquiry - When harvesting potatoes in autumn, catch up with the continuous rain, does it affect potatoes?
When harvesting potatoes in autumn, catch up with the continuous rain, does it affect potatoes?
Potatoes like cold and cool, and they like low-temperature crops. The formation and growth of underground potato requires a loose, breathable, cool and moist soil environment. The temperature requirement of potato is that the optimum temperature for tuber growth is 16℃~ 18℃, and the tuber will stop growing when the local temperature is higher than 25℃. The optimum temperature for stem and leaf growth is 15℃~25℃, and it will stop growing when it exceeds 39℃. Potato has high yield, rich nutrition and strong adaptability to the environment, and now it has spread all over the world. Tropical and subtropical countries can plant and obtain high yield even in winter or cool season. Sow early in time, fertilize early in time and sow early, so that the whole growth period of potato is in a relatively cold and low temperature season, and the formation and expansion of potato blocks avoid the high temperature period. Pay attention to the thickness of the soil. Generally, the soil thickness is not less than 12 cm. When sowing, if the covering soil thickness is insufficient, it should be 1~2 times with the growth of seedlings after emergence. The soil cover is too thin, the ground temperature changes sharply, and the stolons easily escape from the ground. The products of potato cultivation are tubers produced underground, which are formed by the swelling of the top of stolons. They have many characteristics of aboveground stems. Stolon, tuber and aboveground stem can be said to have no essential difference and can be transformed into each other under certain environmental conditions. Dwarf varieties should be selected for the prevention and management of dwarfing of potted vegetables. In the case of few dwarf varieties, it is necessary to control water and squat seedlings in the early stage of growth, and the principle of water management is not to affect the growth and development of vegetables. At the same time, plant regulation can be used to dwarf plants, and growth regulators can be used to control plant growth if necessary.
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