Nandou No. 5 (soybean)

Characteristics: white flowers, brown hair, lanceolate leaves, compact plant type, limited pod setting habits. The average growth period is 109 days, the plant height is 49.5 cm, the branches are 2.3, and the 100-grain weight is 22.4 g. The pods are brown when mature. Seeds ellipsoid, testa yellow, umbilicus brown. Average crude protein content was 46.18%, crude fat content was 18.71%.

Yield performance: In 2002, the average yield per mu was 146.5 kg, which was 5.5% higher than that of Xiangchun 10 (very significant); in 2003, the average yield per mu was 140.7 kg, which was 5.2% lower than that of Xiangchun 10; in the two-year regional test, the average yield per mu was 146.0 kg, which was 1.6% higher than that of Xiangchun 10. In 2003, the average yield per mu was 122.0 kg, which was 4.8% higher than that of Xiangchun 10.

Key points of cultivation techniques: 1. Sowing time: spring sowing in the Yangtze River Basin in the middle and late March; summer sowing in the middle and late May; autumn sowing in the early to late July. 2. Planting density: 15,000 - 17,000 seedlings per mu in spring and summer. Intercropping with peanut, sweet potato and other crops to protect 0.2-0.25 million seedlings per mu. 3. Fertilization: 20-25 kg of calcium superphosphate and 1000-1500 kg of human and livestock manure water are applied per mu as base fertilizer.

Examination and approval opinions: After examination and approval, the variety meets the national soybean variety examination and approval standards and passes the examination and approval. It belongs to high protein soybean variety and is suitable for spring sowing in Sichuan Basin and low mountain and hilly areas, northern Hunan, central and northern Jiangxi, southern Anhui, southern Jiangsu and Jianghan Plain of Hubei Province.