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.
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Kexin No. 6 (soybean)
1. The variety was bred in 1996 by the Institute of Genetics, Chinese Academy of Sciences, using "Yudou 2" as the parent material and using chemical mutagenesis repeated treatment technique. The original variety code is "E44". It was approved by Beijing in 2001. Second, characteristic spring sowing soybean varieties, the growth period is 135-138 days. Sub-limited podding habits, branch number 2-3, plant height 110 cm, main stem node number 22-25, grain number per plant 92.7, 100-grain weight 22 g. Grain
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Kexin No. 4 (soybean)
1. The variety was bred by Institute of Genetics, Chinese Academy of Sciences in 1998, original code: 96-274. This variety was bred by chemical mutagenesis technique combined with pedigree breeding. It was approved by Beijing in 2002. Second, the characteristics of mid-mature spring soybean varieties, sub-limited podding habits, the whole growth period of 135-136 days. Plant height 100-105 cm, oval leaves, purple flowers, gray hairs, yellowish brown pods, partially deciduous at maturity, undehiscent pods
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