When are peanuts generally sown in Northeast China?
As a common leguminous plant, peanuts are very useful in daily life. They can be eaten directly, used in soups, pressed for oil, or processed into secondary food products. So when are peanuts sown in Northeast China?
1. Basic introduction to peanuts
The peanut is an annual herbaceous plant of the Fabaceae family, genus Arachis, originating in the tropical and subtropical regions of South America. It was introduced to China around the sixteenth century and saw some development by the end of the nineteenth century.
June to August is the flowering and fruiting period of peanuts. Peanut seeds contain 40-50% fatty oil, 20-30% nitrogenous substances, 8-21% starch, 2-5% cellulose, 5-8% water, 2-4% ash, and a small amount of vitamins.
2. When are peanuts sown in Northeast China?
Peanuts in Northeast China are suitable for sowing from late April to early May each year. The suitable sowing temperature is around 15°C. The specific sowing time also depends on the local temperature and weather.
Peanuts are widely distributed in China and are grown in all regions. The main producing areas are Shandong, eastern Liaoning, the Leizhou Peninsula in Guangdong, the Huanghuai River region, and the coastal hilly and sandy soil areas of the southeast coast. Among them, there are more plantings in the northern regions of Hebei, Henan, and the northern parts of Jiangsu and Anhui provinces. The Shandong Peninsula, the central-southern hills of Shandong, the lower reaches of the Luan River in eastern Hebei, the Yellow River floodplain in eastern Henan, and the Huaibei region of Jiangsu and Anhui provinces are key peanut-producing areas in northern China.
3. What varieties of peanuts are there?
1. Common type
Inflorescences alternate on the lateral branches, with many branches and obovate-round leaves. Dark green. The plant cluster is upright, clustered, or prostrate. The pods are relatively large. Seeds are long cylindrical. The growth period is relatively long.
2. Pearl bean type
The lateral branches are close to the main stem and can continuously produce several inflorescence nodes, with only a few secondary branches. Leaves are elliptical, light green or green. The plant is upright or clustered. The pods are relatively small. Seeds are peach-shaped. Dormancy is weak.
3. Multi-seed type
Each node of the lateral branches can produce inflorescences, with very few secondary branches, and the main stem has inflorescences. The plant is tall, and there is obvious anthocyanin on the stems and branches. The pods are club-shaped, with pods containing 3-4 seeds making up the majority. Seeds are cylindrical.
4. Dragon-born type
The plant is prostrate, with alternating flowering, much pubescence, and anthocyanin. The pods have a keel (dorsal ridge) and a hooked beak, and are hockey-stick shaped. The pod shell has deep reticulation, and the peg is fragile and breaks easily.