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What are the control methods for soybean nutrient deficiency?
Soybean micronutrient deficiency shows as follows: in spring soybeans, nitrogen deficiency causes the true leaves to turn yellow, and yellowing can spread from bottom to top; on the compound leaves there are parallel continuous or discontinuous iron-colored patches along the veins, and chlorosis spreads from the leaf tip toward the base until the whole leaf is pale yellow and the veins also lose green; the leaves are small and thin and fall off easily, the stems are slender, and the lower leaves of the plant are dark green, thick, uneven, and long; when sulfur deficiency is severe, the veins are yellowish-brown, and later the whole leaf turns yellow. Potassium deficiency causes leaf yellowing, with symptoms developing from the lower leaves to the upper leaves; chlorotic spots first appear at the leaf margins, then
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Introduction to the Soybean Variety Shundou 92-51
I. Variety Origin Bred in 1992 by Zhang Youyi of Niulanshan Town, Shunyi District, Beijing. Original code: 92-51. Parental combination: Dunzihuang x Red Soybean. Approved by Beijing in 2002. II. Characteristics and Traits Spring-sown soybean variety, with a whole growth period of 135 days. Seedlings grow vigorously, plant height about 70 cm, more than 4 branches, leaves are oval, sub-determinate podding habit, white flowers, brown pod husks, gray pubescence, seeds round and yellow, glossy, some seeds have a red blush, seeds are relatively large, 100-seed weight 22-
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New High-Yield Cultivation Technique for Soybeans: "Four Changes and One Addition"
With the traditional tillage and sowing method for growing soybeans, the rows are narrow and the plants too dense, and combined with various other reasons, yields have long hovered around 100-150 kg. Through years of experimental research, we have worked out a new approach that can increase soybean yields by more than 40%, namely the "Four Changes and One Addition" technique. The usual measures for raising soybean yields, besides selecting new high-quality, high-yield varieties, also include paying attention to crop rotation. According to experiments, after many years of continuous cropping, soybeans show slow growth, short plants, yellowing lower leaves, early leaf drop, and few pods with small seeds. Experiments have also proven that continuous cropping (monocropping) for more than 3 years can reduce yields by 20%-30%, or even more, and 2 years of continuous cropping following a one-year break can reduce yields by more than 30%. Therefore, crop rotation and changing to a different crop are of great significance in soybean production. To achieve high-yield and super-high-yield soybean cultivation, the new "Four Changes and One Addition" cultivation technique should be implemented on this basis. The specific methods of "Four Changes and One Addition" are:
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Characteristics and Traits of the Sudou No. 5 Soybean Variety
Strong seedling emergence vigor, young stems green, leaves ovate and dark green. Plants upright, determinate podding habit, purple flowers, fresh pods curved sickle-shaped, pubescence gray. Average results from provincial regional trials: 92 days from sowing to harvest, plant height 42.2 cm, main stem 10.4 nodes, 1.9 branches, 21.4 pods per plant, percentage of multi-seed pods 59.4%, 410.5 standard pods per kg, two-seed pod length 5.1 cm, width 1.3 cm, fresh 100-seed weight 65.0 g, shelling rate 52.3%.
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Introduction and Characteristics of the Suinong 14 Soybean Variety
This variety is a new medium-maturity spring soybean bred by the Suihua Agricultural Science Institute of the Heilongjiang Academy of Agricultural Sciences, using Hefeng 25 / Suinong 8 as the parent materials. Characteristics: Suinong 14 has a growth period of about 120 days, with an active accumulated temperature of about 2486°C, and is a medium-maturity variety. It has a semi-determinate podding habit, medium-tall plant height, few branches, dense pods on the main stem, purple flowers, long leaves, thick dark green leaves, and gray pubescence. Internodes are short, pods are dense, and there are many 3- and 4-seeded pods. The seeds are spherical, the seed coat is bright yellow, the hilum is colorless, and the 100-seed weight is 21-22 g.
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Korean small-seed yellow soybean: extremely early maturing, high protein content
Korean small-seed yellow soybean is a soybean variety introduced from Nehe City, Heilongjiang Province, China, specifically for sprout production. Characteristics: this variety has dark green young leaves, strong growth vigor, and good field uniformity; the plant is erect and relatively compact; the leaves are lanceolate, with leaf length of 12-17.50 cm and petiole length of 8-12 cm; plant height is 56-83.70 cm, the first pod is set at a height of 7 cm, the number of pods per plant is 25.70-66.50, and the number of seeds per pod is 2.70; the flowers are purple, the pods are straw-yellow, the hilum is light brown, and the seeds are yellow and nearly
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Introduction to the Characteristics of an Extra-Early-Maturing Fresh-Edible Soybean Variety
"Chunfengzao" is an early-maturing variety, formerly named Beiguozaosheng. It is a fresh-edible spring soybean variety introduced by the Zhejiang Provincial Agricultural New Variety Introduction and Development Center from the Tohoku Seed Co., Ltd. of Japan. It passed the examination and approval of the Zhejiang Variety Approval Committee in 2001. After two years of multi-site spring-sowing comparative trials, this variety achieved an average fresh pod yield of 521.8 kg per mu, a 4.5% increase in yield per mu compared with the control "Xiaoken 8901". Its spring-sowing growth period (from sowing to harvest of fresh pods) is 80 days. It is of the determinate pod-setting type, with a compact plant architecture and a plant height of 30-35 cm. The fresh weight of 100 pods is about 230 g, and the fresh weight of 100 seeds is about 6
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Why can Pandun soybean challenge the Guinness record?
Pandun soybean was developed by Comrade Gao Xuehuan through distant hybridization, using "Swan Egg" soybean as the female parent and iron-pod pumpkin as the male parent. This achievement has been legally examined by the National Intellectual Property Administration and was publicly announced in the China Patent News on July 7, 2004, with patent publication number 02135997.0. The characteristics of this soybean are determinate podding, indeterminate branching, automatic topping, and pods formed in spikes. It has excellent yield potential, mainly for the following reasons: First, the plant height is about 1.6 m, with exceptional plants reaching 2 m. The basal diameter of the main stem is generally 2 to
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Detailed Introduction to the Soybean Variety Tiefeng 29
The new soybean variety Tiefeng 29 was developed by the Tieling Institute of Soybean Science in Liaoning Province in 1987 through sexual hybridization, using Tie 8114-7-4 as the female parent, which had good yield performance, a yield of 56.1 g per plant, many branches, dense pods, large and uniform seeds, and a 100-seed weight of 25.4 g, and Tie 84059-13-8 as the male parent, which had ordinary traits but was lodging-resistant, and was developed through many years of selection and breeding. Its original line number was Tie 87107-6, and it passed examination and approval by the Liaoning Provincial Variety Approval Committee in November 1997. Characteristics and traits: this variety has determinate podding
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Introduction and Characteristics of Tongdou No. 4 Soybean Variety
1. Approval number: Su Shen Dou 200602. 2. Variety source and type: Originally named "95-50", it is an early-maturing summer soybean variety for the Huainan region, developed in 2000 by the Jiangsu Yanjiang Regional Institute of Agricultural Sciences through the cross of Pudong Da Huangdou / Yancheng Gan Jiangnan. 3. Suitable range: Suitable for cultivation as summer soybean in the Huainan region of Jiangsu Province. 4. Yield level and characteristics: In 2003-2004, it participated in the Jiangsu Province Huainan summer soybean regional trial, with a two-year average yield of 148.0 kg per mu, an increase of 8.
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