Detailed Introduction to the Xingnong No. 2 Soybean Variety

Xingnong No. 2 soybean was successfully bred by farmer and agricultural technician Tian Suhua over 5 years. After continuous 4-year trial demonstrations at more than 1,200 sites in 13 provinces and regions by the Agricultural Technology Application Research Institute of Shan County, Shandong Province, the yield per 1/15 hectare (1 mu) is 400-450 kg for spring sowing and 300-400 kg for summer sowing. This line grows uniformly, has good lodging resistance, many nodes on the main stem, good pod-setting ability, good yield performance, and great yield-increasing potential, with high and stable yields. It passed expert appraisal on January 15, 2001. Characteristics: semi-determinate pod setting, medium-early maturity, with a spring sowing growth period of 130 days and a summer sowing growth period of 95-100 days. The root system is well developed and the growth vigor is strong. The leaf shape distribution is reasonable, with heart-shaped leaves in the middle and lower parts and lanceolate leaves in the upper part. The leaves have strong photosynthetic potential. According to measurements by Shandong Agricultural University, 8 related indicators including photosynthetic rate all showed obvious advantages over the control variety. It begins flowering and setting pods when the third true leaf is fully expanded. The flowers are white, the flowering period is long, and the number of flowers is 2-3 times greater than that of ordinary varieties, with good pod-setting ability, good and stable yield performance, and great yield-increasing potential. The plant height is generally 120-160 cm, self-topping, and the stems are thick and hard, with high resistance to lodging. Under dense planting it does not branch; under sparse planting it has 3-6 branches, with clustered pods along the stem, 4-6 per cluster, up to 8 in some cases. From the bottom of the soybean plant to the top it is densely covered with pods. Each plant sets 60-90 pods, with a maximum of more than 300. Three-seeded pods account for more than 90%. The filling rate is fast, maturity is uniform, and dry pods do not shatter naturally. The seeds are round, yellow, with a light brown hilum, and the 100-seed weight is 18-20 g. It can be planted from Jiangxi Province in the south to Inner Mongolia in the north, has strong resistance to stress and disasters, few diseases and insect pests, tolerance to drought and waterlogging, and tolerance to continuous cropping. Quality characteristics: According to tests by Shandong Agricultural University, the protein content is 40.1%, the fat content is 18.6%, and the content of unsaturated fatty acids is high, with linoleic acid and linolenic acid accounting for 54.14% and 6.2% of total fatty acids respectively, making it a highly nutritious and storage-tolerant soybean. Cultivation points: It has a wide range of adaptation and a broad suitable sowing period, and is suitable for planting in medium-to-high fertility fields, with both spring and summer sowing possible. On general soil fertility, plant 12,000 plants per 1/15 hectare; in poor thin fields, 20,000 plants. For spring sowing, the row spacing is 80 cm; for summer sowing, about 60 cm, with a plant spacing of 5-8 cm. After wheat harvest, it can be sown in a rush before the next crop.