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What are the main advantages of the three-ridge soybean cultivation technique?
Main advantages of the "three-ridge" soybean cultivation technique: First, deep soil loosening breaks through the plow pan, deepens the tillage layer, and improves soil structure, which benefits soybean root development and nodule formation; deep loosening creates a soil structure with both loose and firm zones, improving soil permeability. Second, layered fertilization within the ridge body improves fertilizer use efficiency and delays the fertilizer supply period, preventing nutrient deficiency late in the growing season. The small precision seeders currently used in production can all achieve deep placement of chemical fertilizer; they can also apply seed fertilizer and base fertilizer at the same time. Third, double-row precision
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Detailed Explanation of Control Measures for 3 Soybean Diseases
Soybean root rot: This disease can occur and cause damage throughout the entire growth period of soybean, with yield reductions of 25%-75% or more. The protein content of affected seeds is significantly reduced. The main symptoms are dark brown lesions appearing at the base of the stem, spreading upward to varying degrees to the lower lateral branches, causing the pith of the diseased stem to turn brown, the base of the petiole to constrict, and the leaves to droop but not fall off. Chemical control mainly uses 58% ridomil manganese zinc or 72% curzate wettable powder, both applied as seed treatment at 0.3%-0.4% of seed weight. Soybean sclerotinia: Soybean sclerotinia
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Key Technical Points for 45 cm Narrow-Row Dense Planting of Soybean
The 45 cm narrow-row dense planting cultivation technique for soybean is a new technique we selected in Dunhua City in 2004 on the basis of introducing the soybean narrow-row dense planting cultivation technique from Heilongjiang, adapted to the climate, soil and cultivation characteristics of our region, and it is a new breakthrough in the reform of the farming system in Dunhua City. In 2005, trials were conducted at the farms of Guandi, Heishi and Shaheyan; the average yield of soybean in the trial area was 202.9 kg per mu, 24.9% higher than the control. In 2006, 1500 mu were promoted citywide, with an average yield of 203.52 kg per mu and a maximum
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How to preserve soybean flowers and increase pod set? A detailed explanation of chemical regulation management techniques
1. Applying rare earth. Rare earth is also called rare earth micro-fertilizer or rare earth nitrate, with the trade name Changle Yizhisu. It is a new type of rare earth element fertilizer first developed and promoted as a key project in China; at the soybean seedling stage and early flowering stage, spraying once each with rare earth solutions at concentrations of 0.03-0.04% and 0.08% respectively can increase grain protein content by 5.9%, fat content by 8.5%, and yield by 15%-20%. 2. Applying paclobutrazol. Paclobutrazol is also called chlorobutrazol, code PP333, and is a new type of plant growth
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Early prevention and control of soybean diseases: seize the opportunity to reduce yield losses
To achieve high yields in soybean, the main challenge is to properly manage the four aspects of "seed, water, fertilizer, and light." The "deep-narrow-dense" cultivation technique is a comprehensive high-yield supporting cultivation model formed on the basis of this principle. It takes the selection of dwarf varieties as the breakthrough point, uses air-suction seeders and general-purpose machines as the carrier, and combines "deep" (i.e., deep loosening, deep fertilization, and layered fertilization), "narrow" (i.e., narrow rows), and "dense" (i.e., increased planting density) into a comprehensive high-yield supporting technique. It is a cultivation technique that uses large seeders as the carrier. "Seed" means variety,
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Analysis of Key Technical Points for Soybean Sowing
1. What key techniques should be mastered for soybean sowing? 1. Land selection. Soybean plots should not be planted continuously, otherwise pests and diseases are likely to occur. After the land is selected, it should be harrowed until the topsoil is loose and the surface is level. 2. Seed selection. Varieties suitable for planting in Tiandong include: Beijing bean, Yishan Liula, Guidou No. 1, Aijiao bean, Binyang Xiaoqing bean, local yellow soybean, etc. Each area can choose according to local conditions. Before sowing, select seeds of uniform size that are large and plump, and sun-dry the seeds. 3. Sowing. Early yellow soybean is sown from late February to mid-March
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Key Technical Points and Precautions for Soybean Sowing
1. Soil preparation: (1) Pre-sowing land preparation: Pre-sowing land preparation includes the soil tillage carried out before sowing as well as harrowing, leveling, and rolling. Because different land preparation techniques are used, the pre-sowing land preparation work also differs. Examples include flat plowing, ridge planting, stubble harrowing, and deep loosening. (2) Pre-sowing irrigation: For plots with poor soil moisture, where irrigation conditions permit, water once 1-2 days before sowing, just enough to moisten the soil, to facilitate seed germination after sowing. (3) Pre-sowing pre-emergence herbicide application: In some large farms in the main soybean-producing areas of Northeast China, soybean cultivation
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Why can't soybeans be planted in continuous cropping?
Soybeans are commonly known as yellow beans. Farmers have a traditional habit of planting soybeans this year and continuing to plant them next year, which results in stunted growth, shortness, yellowing leaves, susceptibility to pests and diseases, fewer pods and small seeds, and significantly reduced yield in continuously cropped soybeans. According to surveys, under normal circumstances, continuous cropping of soybeans reduces yield by 20%-30% or more. The main reasons for the yield reduction: pests and diseases are prone to occur. Several diseases parasitic on soybeans, such as bacterial spot disease, black spot disease, damping-off, and yellow wilt, have suitable conditions for occurrence in continuously cropped soybean soil and will inevitably occur in large numbers
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Why soybeans should not be grown in continuous or alternate-year cropping
Soybean continuous and alternate-year cropping control techniques can reduce the impact on yield. Impact on soybean yield. Different environments have different effects on soybean yield. ①Continuous cropping is severe, alternate-year cropping is mild; ②severe in the west and southwest, mild in the north and east; ③severe on poor land, mild on fertile land; ④severe on ridge slopes, mild in low-lying wet areas; ⑤severe in dry years, mild in rainy years; ⑥severe with no or little fertilizer, mild with more fertilizer; ⑦severe with original-ridge sowing, mild with plowed new ridges; ⑧severe with many soil-borne diseases and pests, mild with few diseases and pests; ⑨severe on long-cultivated land, mild on newly reclaimed land; ⑩severe under drought, mild with irrigation. The four eastern leagues of the Inner Mongolia Autonomous Region are each similar to their adjacent provinces, among which the Hulunbuir League area is similar to the northern part of Heilongjiang Province, and the continuous cropping phenomenon is also very severe. Today I want to discuss three issues: first, the impact of continuous and alternate-year soybean cropping on soybean yield and quality; second, the reasons for continuous and alternate-year soybean cropping; third, control techniques.
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What herbicide is good for weed control at the soybean cotyledon stage
Fomesafen (Flex, Douchuoyou) can be used for control. Generally, when soybean has 1 to 3 compound leaves, use 68 to 132 milliliters of 25% fomesafen aqueous solution per mu, add 20 to 30 kilograms of water, and spray evenly. Fomesafen is a selective contact herbicide, mainly absorbed through weed stems and leaves, and can also be absorbed through roots. It should be applied after the volunteer rapeseed in the field has basically emerged.
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