Biennial herbaceous flowers of Brassica in Cruciferae. Kale leaves are large and spoon-shaped, smooth and hairless, with fine wavy wrinkles on the edge; The petiole is thick and winged; Bolting and flowering in April, golden in color, yellow to orange; Rectangular cylinder; Seeds spherical, grayish brown; The leaf viewing period is from 65438+February to March of the following year; Wei Wu's book "Cultivation Techniques of Protected Vegetables" wrote: "The whole plant of kale looks like peony, so people also call it Ye Mudan."
The origin of kale is from the coast of China to Asia Minor, mainly distributed in temperate regions, and cultivated in China, Beijing and Shanghai. Kale likes cold climate, is extremely cold-resistant and waterlogged-resistant. It can endure short frost for many times, has strong heat resistance, likes sunshine, and is suitable for growing at 20 ~ 25℃. Strong growth potential, easy cultivation, strong adaptability to soil, salt and alkali tolerance, its propagation mode is seed propagation, which can be planted by sowing.
Growth habit
Kale likes cold climate and is extremely cold-resistant and waterlogging-resistant; It can endure short frost for many times, has strong heat resistance, likes sunshine, and is suitable for growing at 20 ~ 25℃. Strong growth potential, easy cultivation, strong adaptability to soil and salt tolerance.
Temperature: like cool and mild climate, strong cold resistance. After hardening, the seedlings can withstand the short-term low temperature of-65438 02℃. When cultivated in the open field in northern China in winter, the adult plant can withstand short-term frost of 15-20 times without withering, but can not tolerate long-term continuous cold. It takes more than 30 days to collect seeds at 2- 10℃. It can grow at a high temperature of 35℃, but the harvested leaves have poor flavor, more fiber and hard quality.