Kexin No. 5 (e262) soybean

(quality Inspection Registration No.: 0104005-2000)

I. Source of varieties

It was bred by Institute of Genetics, Chinese Academy of Sciences in 1995. Ludou No. 4 was used as the parent material for chemical mutagenesis. It was approved by Beijing in 2000.

2. Characteristic characteristics

The growth period of spring sowing is 140-143 days, the plant height is 100-105 cm, the growth period of summer sowing is 99-102 days, and the plant height is 60-70 cm. The plant type converges. Leaves oval, dark green, deciduous at maturity, white flowers, gray velvet. Pod height 10-15 cm, sub-limited pod-bearing habit, 2-3 effective branches, 21-23 nodes on main stem, average pod number per plant 55. The pod is yellow, medium size, 3 pods are mostly, and the pods are light. The seed is oval, the seed coat is yellow, shimmer, does not crack the coat, the navel is light brown, the purple spot rate is less than 0.5%, the brown spot grain rate is less than 1%, the insect eating grain rate is less than 2%, the grain appearance is good, and the grain weight per plant is 23.5 grams.

Disease resistance: high resistance to soybean mosaic virus.

Quality analysis: crude protein 46.04%, crude fat 19.03%, protein and fat content reached the national quality standard.

III. Key points of cultivation techniques

It is suitable for spring and summer intercropping and intercropping in Beijing, Tianjin and Huang-Huai area. Spring sowing is usually from April 25 to May 15, and summer sowing from June 10 to June 25 can mature in time.

Sow enough moisture to ensure that the seedlings are neat. High fertilizer and water land: 0.80-9000 seedlings / mu in spring sowing and 1.1-12000 plants / mu in summer sowing. General plots: 1-12000 plants / mu in spring and 1. 3-14000 plants / mu in summer. The sowing density of barren, dry and saline-alkali land increased appropriately.

Timely watering and weeding by ploughing and weeding, and proper control of watering at the seedling stage during spring sowing to prevent overgrowth of plants. Adequate fertilizer and water should be ensured at flowering stage, podding stage and seed filling stage of soybean. Harvest in time after maturity.

IV. Areas suitable for planting

It is suitable for spring and summer intercropping and intercropping in Beijing, Tianjin and Huang-Huai area.