1. Rape flowers are rich in pollen. The oil content of seeds is 35~50%, which can be used for oil extraction or feed. In addition, the tender stems and leaves of rape flowers can also be eaten as vegetables. Rape flower is the largest edible vegetable oil raw material in China. The fruit juice made of rape flowers is said to have the effect of preventing hypertension, anemia and colds in medical treatment.

2. Rapeseed can be used not only to extract edible oil and feed, but also 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.

3. Rape flower has important economic value and ornamental value, and it is a kind of tourism resource.

Extended data:

The main diseases of rape are Sclerotinia sclerotiorum and virus disease. Sclerotinia sclerotiorum mostly occurs in the flowering and fruiting period of rape, and it can be prevented by spraying thiophanate or carbendazim aqueous solution. Viral diseases can be alleviated by controlling aphids.

Spraying 1 time aqueous solution of trace elements such as phosphorus, boron and manganese or compound organic fertilizer at the flowering stage of rape can prevent rape from flowering and bearing no fruit. Spraying 0.02% boric acid solution on leaves can increase the number of effective branches, pod number per plant and 1000-grain weight of rape. Spraying 2% ~ 3% aqueous solution of calcium superphosphate on the pod leaves at maturity.

References:

Baidu encyclopedia-rape flower