Rape flower, alias Brassica, Latin name rape, native to Europe and Central Asia, is a Brassicaceae plant. In China, rape flowers are mainly distributed in Huangling, Wuyuan, Jiangxi, 10,000 mu terraces in Hanzhong Basin and Jiangling, Luoping Plain in Yunnan and Menyuan Plateau in Qinghai.
The plants are straight and clustered, the stems are yellow and green, the basal leaves grow spirally, and the stem leaves are usually alternate without stipules. The flowers are bisexual and radially symmetrical, and the four petals are arranged in a cross. These flowers are as yellow as rice paper. There are usually 6 stamens, 4 long and 2 short, which are usually called "four strong stamens". The pistil consists of two carpels, and the ovary is located on the upper side.
The stem is cylindrical, with a diameter of 0. 1-0.8 cm, many branches and soft stems. Leaves alternate, large, dark green, without petiole and support. In March and April, there are flowers at the top of the stem, which are racemes, four sepals, yellow-green, four corollas, yellow and cross. The fruit is silique. When summer is ripe, it cracks and sows, purple-black, yellow.
Rape flower has four petals, neatly surrounding the stamens, and its personality is simple. Petals are so delicate and delicate that no skilled sculptor can carve them. The flowers in the middle bend together, as if whispering. It has tough roots and dense leaves, and it is as simple and rough as the farmers who grow them.
economic value
The development of rape industry in China Rapeseed is the most important oil crop in China, and its seed oil content is 33% ~ 50%. Since 1995, the perennial planting area is100000 mu, and the annual output of rapeseed is nearly1000000 tons, accounting for 40% ~ 45% of the total output of oil crops (excluding soybeans); At the same time, it also produces about 6 million tons of rapeseed cakes. The protein content of the cake is as high as 40%.
The amino acid composition of rapeseed protein is reasonable, and the lysine content is equivalent to that of soybean, while the sulfur-containing amino acids such as lysine and methionine are higher than that of soybean protein, which is the largest source of high-quality feed protein to be developed and utilized in China. Rapeseed is not only used to extract edible oil and feed, but also used to make margarine and artificial protein in food industry.