Sweet potato (Latin name: sweet potato. , alias: sweet potato) belongs to Panicum of Convolvulaceae. It is native to South America and Antilles, and is widely planted in tropical and subtropical areas all over the world.

It is more than 2 meters long and lies on the ground. Its leaves are usually oval, 4 ~13cm long and 3 ~13cm wide. Its corolla is pink, white, lavender or purple, bell-shaped or funnel-shaped and 3 ~ 4cm long. Capsule ovoid or oblate. There is a false diaphragm, which is divided into 4 rooms. There is a root in the ground, which is spindle-shaped, and the skin is light yellow or purple. It likes temperature, is afraid of cold, is not cold-resistant, likes light, and is a shade-intolerant crop.

Growth habit of sweet potato:

Sweet potato likes temperature, is afraid of cold, and is not cold-resistant. The suitable growth temperature is 22-30℃, and the growth will stop when it is lower than 65438 05℃. Different growth stages have different requirements on temperature, and the temperature in bud stage should be 18-22℃. Too high or too low temperature will affect the germination rate.

The seedling temperature should be 22-25℃, the stem and leaf temperature should be 22-30℃, and the stem and leaf temperature should not be lower than 16℃, otherwise it will hinder its growth or even stop its growth; If it is lower than 8℃, it will cause plants to wither and die of frost. The temperature of root tuber stage should be 22-25℃. Appropriate temperature can promote the growth of plants in each growth period and ensure the rapid number and expansion of roots.