Ricinus communis was widely planted in rural areas before. Why do you plant less now? What is the role of castor?

As for why there is less planting now?

Needless to say, I stopped buying it later. Castor oil can't be eaten as food. Castor oil is very toxic. Children aged 4-7 eating 2-7 pieces of castor oil can cause poisoning and death. Adults can die if they take 20 tablets. Such a dangerous thing can't be exchanged for money, so it won't be planted. Anyway, this is the reason why A Xi gave up planting in his hometown and countryside, and corn, wheat and other crops were planted back.

In the past, people used castor oil as a lubricant for sewing machines and old clocks and watches, and it also played the role of hand cream. In the past, there was no perfect heating equipment in rural areas like in cities, and people's hands were easy to be rough in winter. At this time, people will split castor oil in two to make their hands smooth again, but castor oil is not a hand cream specially used for hand protection, and the skin is not easy to absorb. After a long time, the sleeves are easily polished by castor oil. Nowadays, the heating equipment in rural areas is getting better and better, hand cream has become a necessary skin care product for women who love beauty, and castor has gradually withdrawn from the historical stage. ?

So, what is the role of castor?

1, medicinal value

(1) castor leaves. In rural areas, castor as a folk prescription is mainly used for leaves and roots. Castor leaves are mashed and applied externally to reduce swelling and detoxify. Washing leaves with water is effective for eczema and itching. Picking fresh castor leaves directly and throwing them into the open toilet can kill maggots and calluses.

② Ricinus communis root has the functions of expelling wind, promoting blood circulation, relieving pain and calming down. Rural folk prescription has boiled water to treat epilepsy, which is said to have a good effect. However, in view of the great toxicity of castor, it is recommended to use it according to the doctor's advice and must not be used indiscriminately.

2. Raw materials for papermaking and artificial cotton. The nature used here is hemp stalk skin.

3. Industrial raw materials

As an industrial raw material, castor oil is mainly used for. Because of its particularity, castor oil does not freeze at -8~- 10℃ and does not solidify and denature at 500~600℃, which naturally has incomparable importance to other oils and fats.