Yudou 24 (soybean)

Yudou 24 is a new mid-maturity, disease-resistant and high-yield soybean variety bred by the Institute of Agricultural Sciences in Zhoukou area of Henan Province. The parent combination is: [(Yudou 15 Yudou 10) F1max / (Sidou 11 / week 8460) F1] F1Accord / [(Sidou 11 / week 8460) F1max / (Zhou 85054 / Zhou 8265) Fl] F1.

Yudou 24 is a mid-mature summer soybean variety with an average growth period of 104 days in Henan Province. Limited podding habit, plant height 70 cm, more resistant to lodging, 1-3 effective branches per plant. Leaves oval, medium size, dark green; purple flowers, gray velvet, brown pods after maturity, seeds yellow, navel light brown. There are about 46 effective pods per plant and the weight of 100 seeds is 22.2 grams.

This variety participated in the soybean variety regional trial in Henan Province from 1993 to 1994. The yield per mu was 115.8 to 251.6 kg, with an average yield of 179.8 kg per mu in two years, which was 17.29% higher than that of the control GS Yudou 8. From 1996 to 1997, it participated in the soybean variety production test in Henan Province. The average yield per mu in two years was 173.5 kg, and the highest yield per mu was 255.4 kg, which was 10.2% higher than that of the control GS Yudou 8.

According to the laboratory analysis of the Agricultural products quality Supervision, Inspection and Test Center of the Ministry of Agriculture, the protein content of the variety is 45.68%, and the fat content is 18.36%, with a total of 64.04%, reaching the quality target set by the state. According to the resistance identification of the Institute of Plant Protection of Henan Academy of Agricultural Sciences, Yudou 24 had strong resistance to the main soybean diseases and insect pests in Huang-Huai region: resistance to soybean mosaic virus, soybean disease green disease, soybean purple spot and soybean heart borer.

Cultivator Institute of Agricultural Sciences, Zhoukou District, Henan Province

Regional and technical Yudou 24 is suitable to be popularized and planted in summer bean area of Huang-Huai River Basin. At present, the promotion area has reached 2.36 million mu, and it is estimated that the cumulative extension area will reach 10 million mu by the year 2000.

Cultivation rules:

1. The soil quality of Yudou 24 is not strict, so it is suitable for all types of soil in the Huang-Huai River Basin. However, it is appropriate to choose plots with medium and high fertility, flat terrain and convenient drainage and irrigation.

two。 The suitable sowing date is from June 1 to 25, and it is required to sow seeds with sufficient moisture.

3. Sowing rate and density are 6 kg per mu, suitable row spacing is 40 cm, plant spacing is 10-13 cm, and seedling density is about 16000 plants per mu.

4. Field management seedling emergence for one week, ploughing and weeding, or chemical weeding with high efficiency grass cover energy 20ml / mu plus Kuocaoqing 2g / mu to prevent seedling famine and grass famine. Timely administration of medicine to control insects in seedling stage, flower and pod stage and grain filling stage. In the early flowering stage, in case of high temperature and rainy weather, multi-effect herbs should be sprayed to control the growth and prevent lodging, and the flower and pod stage and grain filling stage should be watered in time to prevent drought.

5. Harvest and threshing "bean ripe ringing bell", harvested after most of the bean leaves fall off and the seeds are separated from the pod skin. The stall should not be too thin when crushing and threshing, so as to avoid rotten seeds and flat seeds. During mechanical threshing, the rotational speed should be controlled at about 800 rpm / min to prevent grain fragmentation.