The best planting season for sweet potatoes is March and April in spring, as this period of spring is generally warm, humid and rainy, with temperatures generally above 20°C, and the buds and new sweet potato branches are growing vigorously. .
Sweet potatoes should be fed 2 months before transplanting, i.e. spring potatoes should be fed at the end of January, autumn potatoes from mid- June to late June and early winter potatoes from early to mid-August. .
Spring potatoes can be transplanted when the soil temperature stabilizes at 12 degrees, around May 1 in northern China; summer potatoes can be transplanted immediately after the wheat harvest, around the beginning of June. Sweet potatoes are one of the crops with high and stable yields. They have great adaptability, strong resistanceto stress, tolerance to drought and sterility, and fewer pests and diseases. They are grown in places with good water and fertilizer conditions.
Detailed information:
Growing habits
It likes temperature, is afraid of cold and is not tolerant of cold. the suitable growth temperature is 22-30°C, growth stops when the temperature is below 15°C. Different growth stages also have different temperature requirements. The temperature during the budding phase should be 18-22°C. If the temperature is too high or too low, it will affect the germination rate.
The temperature at seedling stage should be 22-25℃, and at stem and leaf stage should be 22-30℃. The temperature at the stem and leaf stage should not be lower than 16℃. otherwise, it will hinder its growth or even stop growing if the temperatureis below 8℃, the plants will wither and die due to frost. The temperature at the root-tuber stage should be 22 to 25°C. Appropriate temperature can promote good plant growth in each growing period and ensure rapid root number and expansion.
Good resistance to acids and alkali, strong adaptability to soil environment. It has a well-developed root system and a strong fertilizer absorption capacity. It is advisable to choose a plot with deep soil, loose soil, good soil quality, strong irrigation and drainage capabilities and a pH value between 4.2 and 8.3.