-
Key Technical Points for Spring Soybean Sowing in a Year of Severe Drought in Northeast China
Current drought situation in Northeast China and technical guidance for spring soybean sowing: I. Precipitation and temperature conditions last winter and this spring. In the autumn and winter of last year, the drought in Northeast China was severe, precipitation was lower than normal, and soil moisture was insufficient. From January to October 2007, the average precipitation in Heilongjiang Province was 402 mm, 20% less than the same period in previous years. In addition, this year's widespread "dry sealing of the soil" at the onset of winter was not conducive to soil moisture conservation. Since the beginning of winter, precipitation in southern Qiqihar, most of Daqing, the Hegang area, and some counties and cities in Jiamusi has been more than 90% less than the same period in previous years; other areas have had 10% to 90% less. In January 2008, the average precipitation across Heilongjiang Province was only 0.1 mm, 97% less than the same period in previous years, with most of the Songnen Plain and the western Sanjiang Plain receiving no precipitation at all for the entire month. After entering February, precipitation in various places continued to remain low. Snow depth across Heilongjiang Province also dropped significantly. Compared with the same period in previous years, snow depth in most areas of the province was about 25 cm less. In 2008, the area of cultivated land affected by drought before sowing in Heilongjiang Province may reach 50 million mu. In addition, the continuous warm winter was extremely favorable for soybean pathogens and pest eggs to survive the winter safely, and soybean diseases and insect pests may occur more heavily this year. The spring drought situation in Inner Mongolia is similar to that in western Heilongjiang Province.
-
How to grow soybeans in Northeast China? Main recommended high-oil, high-yield varieties and techniques
The Northeast high-oil, high-yield soybean demonstration project implemented by the state, after two years of development, has introduced a group of excellent high-oil soybean varieties and advanced production techniques, which are gradually being widely applied in large-scale production. On this basis, the Northeast high-oil, high-yield soybean demonstration technical expert group offers the following recommendations for the seed and techniques used in high-oil soybean production in the region in 2004: In 2004, Heilongjiang Province and its reclamation areas can, according to the accumulated temperature and production conditions of different regions, continue to use the high-oil varieties that had already been successfully promoted in large-scale production in 2003,
-
Introduction to the Characteristics of the Dongxin No. 3 Soybean Variety
I. Approval Number: Su Shen Dou 200601. II. Variety Source and Type: Originally named "Dongxin 2002", it is a medium-maturity summer soybean variety for the Huaibei region, developed in 2001 by the Jiangsu Province Lianyungang State Farm Agricultural Science Research Institute through hybridization of A95-10/Sidou 11. III. Suitable Range: Suitable for cultivation as summer soybean in the Huaibei region of Jiangsu Province. IV. Yield Level and Characteristics: In 2003-2004, it participated in the Jiangsu Province Huaibei summer soybean regional trial, with a two-year average per-mu
-
Key Technical Points and Management Methods for Winter Soybean Cultivation
1. Sowing time. The sowing window for winter soybeans is quite flexible; yields do not differ noticeably when sowing from early April to early June. In practice, to ensure winter soybeans obtain a suitable stand of basic seedlings, in addition to correctly determining the number of hills per mu to provide the density basis, sowing should generally be done during the period before the corn canopy closes, so that the soybean seedlings have already formed the necessary vegetative mass before shading intensifies, which helps ensure the basic seedling stand. In strip-planting areas, it is best to sow together with corn or slightly later, that is, in mid-to-late April; in sole-cropping areas after the small spring crop, it is best to sow in early-to-mid May. 2. Planting method. Winter soybean planting method
-
Production Methods and Multifunctional Applications of Soybean Dietary Fiber
1. Physiological Functions of Multifunctional Soybean Dietary Fiber Soybean dietary fiber mainly refers to the general term for those macromolecular carbohydrates that cannot be digested by human digestive enzymes, mainly including cellulose, pectin, xylan and mannose, etc. Although dietary fiber cannot provide the human body with any nutrients, it has important physiological functions for the human body. Dietary fiber has significant effects in lowering blood pressure and plasma cholesterol, and regulating gastrointestinal function, blood sugar and insulin levels. Multifunctional Soybean Fiber (MSF) is mainly composed of dietary fiber and protein, with contents of 67.98% (dry basis) and 19.75% respectively, making it a good protein-fiber additive. Studies have shown that adding a small amount of MSF has a good strengthening effect on medium-gluten or low-gluten flour; within a certain addition range, it can not only increase the dietary fiber and protein content of products, but is also very beneficial for improving the quality of products such as bread, noodles and biscuits. MSF may be the best-functioning of all dietary fibers, far beyond what other synthetic fibers (such as litesse, polydextrose) can match. Multifunctional soybean dietary fiber is a high-quality dietary fiber obtained from fresh okara as raw material through special heat treatment, and it has good effects in regulating blood sugar, lowering blood lipids and promoting defecation.
-
How to prevent soybean flower and pod drop? Practical methods are here
1. Topdressing according to the field and the seedlings. For fields where the plants cannot close the rows in time during the flowering period due to lack of fertilizer, topdressing can be applied once more at the early flowering stage. Generally, applying 5 kg of urea or 10 kg of ammonium sulfate per mu can reduce flower and pod drop. 2. Foliar spraying of fertilizer. During the flowering and podding period, generally use 0.5 kg of urea, 1.5 kg of superphosphate, 0.25 kg of potassium sulfate, and 25 g of borax per mu, add 50 kg of water to extract the infusion, and spray it on the leaves. It is best to spray on cloudy days or after 4 p.m., which helps preserve flowers, increase pods and seeds
-
What to Do About Soybean Flower and Pod Drop? A Full Guide to Prevention and Control Measures
Soybean flower and pod drop is a major factor affecting yield. Under ordinary cultivation conditions, the number of dropped flowers and pods can account for more than 50% of the total number of flowers, and in severe cases up to 70%. Soybean flower and pod drop is mainly caused by internal physiological imbalance in the plant and adverse external environmental conditions. Based on practical experience in our area, the following measures can be taken to prevent soybean flower and pod drop: 1. Apply more phosphorus and potassium fertilizer, and appropriately top-dress with nitrogen fertilizer and micronutrient fertilizer. Applying more phosphorus and potassium fertilizer to soybeans can reduce flower and pod drop and promote full grains. Therefore, on the basis of applying sufficient base fertilizer, at sowing time for every 66
-
Control Methods and Technical Key Points for Soybean Bacterial Blight
Soybean bacterial blight is a disease that occurs commonly in soybean-growing regions, reducing the percentage of fully filled seeds, lowering the 100-seed weight, and decreasing both quality and yield. Leaf lesions are initially round, brown to dark brown; as the lesions enlarge, the center turns black, the lesions do not appear raised, and diseased leaves drop easily. Lesions on stems and pods are brown and round, later becoming spindle-shaped. The seed surface is coated with a layer of bacterial slime, often appearing at one end of the seed, and its shape closely resembles a "frog eye." Diseased seeds are shrunken, and the pathogen overwinters on diseased leaves, stems, pods and seeds.
-
High-yield soybean Kaidou No. 4 improved from an American variety
Kaidou No. 4 is a high-yield, high-quality new soybean variety developed by Kaifeng Zhengda Company of Henan Province, with the support of the State Administration of Foreign Experts Affairs, from advanced-generation lines introduced from the United States, through irradiation treatment and systematic selection. Determinate podding habit. Plant height 75 cm. 6-8 branches per plant. Leaves ovate. White flowers. Seeds yellow, brown hilum, oval. 100-seed weight 15.6 g. Contains 42.1% crude protein and 2.03% fat. Medium maturity, summer-sown growth period 110 days. Outstanding features include dense podding; high yield, 200-400 pods per plant, generally 250
-
Jindou No. 34: Introduction to a High-Yield Soybean Variety
I. Biological Characteristics "Jindou No. 34" soybean, when spring-sown in central Shanxi Province, has a growth period of 133-135 days from emergence to maturity, and in normal years it matures around September 25. When summer-sown in the central Huang-Huai-Hai region, the whole growth period is 112 days. When spring-sown in Jinzhong, the plant height is about 80 cm, with generally 2-3 branches, reaching 3-5 in years with sufficient rainfall, 17-19 nodes on the main stem, a compact plant type, and tough, thick stems with strong lodging resistance. Each plant bears 50-75 pods and 105-150 seeds. The leaves are elliptical, with the upper leaves
条件筛选