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What are the key technical points for flat-planting narrow-row dense planting of soybeans?
Key technical points for flat-planting narrow-row dense planting of soybeans: 1. Seed and treatment: For variety selection, choose suitable varieties according to the local ecological type and local conditions. 2. Seed quality: It must reach Grade II improved seed or above under the seed grading standard. 3. Seed treatment: Use seed coating agent for seed dressing, selected according to the types of pests and diseases and soil conditions. 4. Rotation and tillage land preparation: For crop rotation, use a rotation of more than 3 years, do not plant continuously or on adjacent stubble, and the previous crop should mainly be wheat-type crops. For tillage, adopt mainly deep loosening, combining loosening and harrowing, to facilitate drought resistance and moisture conservation. 5
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Key Cultivation Techniques for Soybean Deep Loosening, Narrow-Row, Flat Sowing and High-Density Planting
Soybean deep loosening, narrow-row, flat sowing and high-density planting is another "new high-yield cultivation model" following "ridge three" and "large ridge density." It integrates advanced techniques such as deep loosening and rotary tillage for seedbed preparation, uses fertilizer to support density and density to increase yield, increases the canopy leaf area index, and improves light interception rate, achieving cost savings and efficiency gains in soybean production. Over two years, Luobei County promoted and planted 16000 mu in Tuanjie, Fengxiang, Zhaoxing and Taipinggou, with an average yield of 206 kg per mu, a 43% increase over the control.
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What temperature requirements does soybean growth have? Detailed explanation of the suitable temperature range
Soybean is a warm-season crop and has different temperature requirements at each growth and development stage. First, seed germination is very sensitive to temperature: the minimum germination temperature is 6°C, emergence is 8-10°C, and seedlings suffer slight frost damage at a low temperature of -4°C. Throughout the growth period, the optimum growth temperature for soybean is a daily average temperature of 20-25°C, among which the optimum growth temperature for seedlings is 20-21°C, the flower bud differentiation stage is 21-23°C, the flowering stage is 22-25°C, the pod-setting and seed-filling stage is 21-23°C, and the maturation stage is 19-
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What are the responses of soybean growth and development to light?
Soybean is a short-day crop, with a daylength range of 9-18 hours. The shorter the light, the more it promotes flower bud differentiation and advances flowering and maturity. When soybean grows its first compound leaf, it begins to respond to light. Generally, seedlings can complete the light stage after 5-12 days of short-day conditions. The appearance of flower calyx primordia on the plant marks the completion of the light stage. Due to long-term adaptation to light conditions in different regions, the short-day response of soybean varies considerably. Southern soybean varieties have a stronger short-day response, while northern soybean varieties are insensitive to daylength, so special attention should be paid when introducing varieties.
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What are the temperature requirements for soybean growth and development?
Soybean is a warmth-loving crop, and the accumulated temperature required by soybean varieties in Heilongjiang Province is about 1800-2700°C. (1) The optimum temperature for seed germination is 18-20°C, at which germination is fast and seedlings emerge evenly; the minimum temperature is 6-8°C, but germination is very slow; when the temperature reaches 33-36°C, germination is fastest, but the seedlings are weak. (2) The minimum temperature required for emergence is 8-10°C. (3) For flower bud differentiation, 21-23°C is more suitable. For flowering, 22-25°C is more suitable. If the temperature is too high or too low, there will be fewer flowers. (4) The suitable
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What nutrients are essential for soybean growth and development?
Soybeans require large amounts of nutrients in many different forms. For the same yield, soybeans need 4-5 times more nitrogen than cereal crops. The main nutrients they require are the three major elements nitrogen, phosphorus and potassium, followed by 9 trace elements including calcium, magnesium, sulfur, magnesium, boron, molybdenum, manganese, zinc and copper.
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Trace elements needed for soybean growth and application methods
Normal soybean growth requires some trace elements, among which the more important ones are molybdenum, boron, zinc, manganese, etc. Molybdenum is a component of soybean root nodule nitrogenase and an indispensable component for the normal life activities of nitrogen-fixing bacteria. Boron is also very important in soybean life activities. Soybeans deficient in boron have poor root development and poor nodule formation, losing their nitrogen-fixing ability. Therefore, attention must also be paid to trace elements. Can the trace elements needed by soybeans be satisfied from the soil? This depends on the abundance or deficiency of trace elements in the soil and environmental conditions. For example, in low-lying or poorly drained
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What are the control methods for soybean downy mildew?
Soybean downy mildew damages seedlings, leaves and seeds. After the first true leaf unfolds, chlorotic patches appear along both sides of the veins. On the leaves of mature plants, round or irregular yellow-green specks with indistinct edges appear on the surface, later turning brown, and a grayish-white mold layer forms on the underside of the leaves. The surface of diseased seeds is covered with a grayish-white layer of mycelium containing large numbers of the pathogen's oospores. The pathogen overwinters as oospores on seeds and in diseased leaves, becoming the primary infection source for the following year. The disease begins to appear in mid-to-late June each year, with the peak period from July to August, and in rainy years it often becomes severe. Control
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How to Identify Soybean Downy Mildew? A Complete Guide to Prevention and Control Techniques
Downy mildew is found in all major soybean-producing regions of China, occurring more frequently in the cold-climate areas of the Northeast and North China during the soybean growing season, with the disease worsening in rainy years, severely causing premature leaf drop or wilting, seed rot, and yield losses of 30%-50%. It mainly damages the leaves, pods, and seeds of seedlings or mature plants. Symptoms: The pathogen on infected seeds causes systemic infection leading to seedling disease, but the cotyledons show no symptoms. After the first pair of true leaves unfolds, chlorotic patches appear along both sides of the leaf veins, spreading along the main vein and lateral veins, causing the entire leaf to lose chlorophyll, with
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High-yield Cultivation Techniques for Soybean with Wide Ridge and Narrow Row Close Planting
Wide ridge and narrow row close planting of soybean can increase the canopy leaf area index, make full use of light energy, and achieve the goal of increasing yield. (1) Site selection and land preparation. The best preceding crops are wheat, corn or potato. Ridging is done as sowing proceeds. The ridge spacing is 130 cm, the ridge height is 25 cm, and the ridge top width is 3O cm. (2) Variety selection. For wide ridge and narrow row close planting of soybean, the varieties selected should generally be 168, ZOQI, 9409B, Fengshou 544, Mijiawang, Hefeng 25, Hebing 93-BS, etc. Seed selection should be carried out before sowing.
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