The flowers are bisexual, with four petals arranged in a cross. Stamens are usually six, four long and two short, which are often called "four strong stamens". The pistil consists of two carpels, and the ovary is located on the upper side. Stems cylindrical, much branched; Leaves alternate, large, dark green, without petiole and support; In March and April, there are flowers at the top of the stem, racemes, four calyxes, yellow-green, four corollas, yellow and a 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.

Extended data

The development of rape industry in China Rapeseed is the most important oil crop in China, and its 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. It is also widely used in metallurgy, machinery, rubber, chemical industry, paint, textile, soap making, paper making, leather, medicine and other industries, and has important economic value.

References:

Baidu Encyclopedia: Rape Flower