Potato is the fourth most important food crop in the world, next to wheat, rice and corn. Originated in South America, the main producing countries are China, Russian, Indian, Ukrainian, American, etc. China is the country with the largest total potato production in the world.
Potato growth conditions
① Temperature: people like to be cold and cool, and are not resistant to high temperature. The average daily temperature17℃ ~ 21℃ is suitable during the growth period. ?
② Illumination: The light intensity is high, the leaf photosynthesis intensity is high, the tuber forms early, and the tuber yield and starch content are high.
③ Moisture: The transpiration coefficient of potato is between 400 and 600. If the total rainfall is between 400 and 500 mm and is evenly distributed in the growing season, the water demand of potatoes can be met. ?
④ Soil: Plants have strict requirements on soil, and the soil with deep topsoil, loose structure, good drainage and ventilation and rich organic matter is the most suitable, especially the soil with large porosity and good ventilation, which can better meet the needs of root development and tuber growth for oxygen. ?
⑤ Nutrition: The growth and development of potato need more than ten kinds of nutrient elements, and the demand for fertilizer is the most, followed by nitrogen and the least.