2. Kale is cultivated throughout China and is usually used as a vegetable and fodder. The concentrated juice of the leaves can be used to treat gastric and duodenal ulcers. It is one of the important vegetables in China. There are many varieties of kale, in addition to kale originating in China, kale varieties originated in the Mediterranean Sea to the North Sea coast. As early as 4000-4500 years ago, the ancient Romans and ancient Greeks were cultivated, commonly known as "dachshund" in northeastern China, commonly known as "lotus white" in Yunnan.
3, kale like mild and moist, plenty of light. Hardy, but also the ability to adapt to high temperatures. Growth temperature is generally 15-20 ℃. If it meets a high temperature of more than 30 ℃, its flesh is easy to fibrosis. The choice of soil is not demanding, but it is suitable for planting in humus-rich clay loam or sandy loam. The seedlings of kale must pass through vernalization at 0-10℃, and then draw, flower and bear fruit under long sunshine and moderate temperature.
4, the value of kale is mainly edible and medicinal value, which is rich in nutrients, such as high-quality protein, fiber, minerals, vitamins and so on, eating purple kale can supplement nutrition, strong body. In addition, the phytochemicals contained in kale can act as important antioxidants and anti-inflammatory related to the prevention of chronic diseases, including cancer. It can also improve stomach ulcers, delay the rise in blood sugar after meals and promote the metabolism of blood fats. In addition, one of the variants of kale, kale, has some ornamental value.