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What causes soybeans to produce many flowers but few pods?
At present, many farmers growing soybeans have found that in some plots the soybean plants produce many flowers but few pods. The reasons can be found through a "five checks." First, check the soil structure and analyze whether the soil pH value is too high, and whether the field has been repeatedly cropped with soybeans or is a continuous cropping field; second, check the fertilizer content and analyze whether the ratio of nitrogen, phosphorus and potassium in the applied chemical fertilizer is reasonable; third, check the planting structure and analyze whether the planting density is reasonable; fourth, check the plant roots and analyze whether pests and diseases have occurred on the roots; fifth, check the soil moisture and analyze whether the moisture content is too high or too low, since both excessive drought and excessive waterlogging will affect the pod-setting rate. Only by carefully
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Detailed Explanation of Key Management Techniques for Soybeans During the Flowering and Podding Stage
During the flowering and podding stage, soybeans require thick, sturdy stems and dark green, thick leaves free of spots. Field management mainly focuses on preventing premature aging, controlling excessive vegetative growth, preserving flowers and increasing pods, and preventing shedding. 1. Skillful application of flower fertilizer. The flowering and podding stage is the period when soybeans absorb the most nutrients, and skillful application of flower fertilizer can generally increase yield by more than 15%. At the early flowering stage of soybeans, generally 5-10 kg of urea is applied per 667 sq m as a topdressing; for poorly growing plants, more should be applied, while for robust and luxuriant plants, less or no topdressing should be applied. In conjunction with nitrogen fertilizer application at the flowering stage, phosphorus, potassium, and trace element fertilizers such as boron and molybdenum should be sprayed on the leaves. Generally, 2 sprays are applied, each time per
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What are the management measures for soybean during the flowering and podding stage? A detailed explanation
1. Topdressing with flower-pod fertilizer. Practice has proven that topdressing during the flowering and podding stage has an obvious effect on subsequently increasing flowers and preserving pods, reducing shedding, and raising yield. Fertilization method: at the early flowering stage of soybean (earlier for poor-growing plants, later for vigorously growing plants), apply 5-10 kg of urea per mu. If the soil has strong fertilizer supply capacity and the plants grow robustly, apply less or not at all, so as to avoid causing excessive vegetative growth, which may lead to lodging or increased flower and pod shedding. In combination with nitrogen topdressing at the flowering stage, foliar spraying of phosphorus and potassium fertilizers and trace fertilizers such as boron and molybdenum has an even better yield-increasing effect. 2. Drought resistance
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What causes soybean flower and pod drop?
1. Poor ventilation and light penetration. Sunlight is not only the main energy source for the production and accumulation of organic nutrients, but also the main factor that promotes rapid plant development and inhibits excessive vegetative growth. Good ventilation and light penetration in soybeans can make the climate between plants consistent with the climate above the plants, reduce humidity between plants, increase light and temperature, accelerate transpiration from the leaf area, and speed up the transport of nutrients. 2. Imbalanced nutrient supply. Plants on poor, thin soil drop more flowers and pods than those on fertile soil. Soybeans with excessive vegetative growth and shaded branches and leaves drop more flowers and pods than soybeans with normal growth and good ventilation and light penetration.
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Key Points of Soybean Chemical Control Technology and Detailed Usage Methods
Chemical control cultivation is an emerging technology in agricultural production. When applied to soybean cultivation, chemical control can regulate plant growth and development, help increase flowers and preserve pods, and raise yields. Application of 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 in China and a key promoted product; at the soybean seedling stage and initial flowering stage, spray once each with rare earth solutions at concentrations of 0.03%-0.04% and 0.08% respectively, which can increase grain protein content by 5.
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What are the control methods for the soybean yellow-bellied tiger moth?
The larvae of the yellow-bellied tiger moth, called caterpillars or leaf caterpillars, are a major seedling-stage pest of soybeans. At the same time, this pest can also damage corn, foxtail millet, sunflowers, vegetables, weeds and fruit trees. 1. Morphological characteristics: The adult yellow-bellied tiger moth is white, with many black spots scattered on the forewings. The abdomen and back are both yellow, with one black spot in the center of each segment and two black spots on each side; the legs have black stripes, and the femora are yellow. The eggs are hemispherical, creamy white when first laid, later turning grayish yellow; the larvae are earth-yellow on the back and ventral surface
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Soybean Jinyi 30 Selected as a 2008 Ministry of Agriculture Recommended Leading Variety
The new soybean variety "Jinyi 30", bred by researchers at the Institute of Crop Genetics of the Shanxi Academy of Agricultural Sciences, was recently selected as a leading variety for nationwide promotion in 2008 by the national Ministry of Agriculture, and is the only variety from our province to be selected. To comprehensively advance the science and technology outreach project and guide farmers in selecting superior varieties and applying advanced, suitable technologies, the national Ministry of Agriculture recommended a total of 80 leading agricultural varieties for nationwide promotion this year. "Jinyi 30" is a large-seeded variety. The plant has thick, sturdy stems, a well-developed root system, and
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Major progress made in project to control soybean yield reduction from continuous and alternating cropping
The reporter learned from relevant departments that the project "Research and Demonstration of Key Technologies for Controlling Soybean Yield Reduction under Continuous and Alternating Cropping," tendered by the Municipal Science and Technology Bureau, has achieved major progress after two years of scientific research. The project was carried out in Yilan and Bayan counties, the two counties with the largest soybean area in Harbin. Through key technology research, soybean varieties resistant to continuous and alternating cropping were selected, including Kenfeng 16, Heinong 48, Kangxian 4, and Hefeng 47. A formula fertilization technique was proposed with 45 kg of nitrogen, 60-67.5 kg of phosphorus, 67.5-75 kg of potassium, and
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How to Grow High-Yield Soybeans? A Detailed Guide to the "Four Changes and One Addition" Cultivation Technique
Traditional drill sowing of soybeans results in narrow rows and overcrowding, and along with various other factors, yields have long hovered around 100-150 kg. Through years of experimental research, we have developed a new approach that can increase soybean yields by more than 40%, namely the "Four Changes and One Addition" technique. The usual measures for increasing soybean yields include, besides selecting new high-quality, high-yield varieties, paying attention to crop rotation. According to experiments, after years of continuous cropping, soybeans show slow growth, short plants, yellowing lower leaves, early leaf drop, and few pods with small seeds. Experiments
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Soybean 1-500 Wholesale Supply Information
Variety source: Zhuanghe City Agricultural Technology Extension Center. Characteristics: growth period 150 days, yield ranks first among current soybean varieties in Zhuanghe City, high oil content, strong branching ability, 6-7 branches, plant height 80 cm, 100-seed weight 10-11 grams, disease-resistant, lodging-resistant, yield per mu 250-300 kg. Cultivation points: sow from April 20 to 25, row spacing 1.7 chi, hill spacing 1.0 chi, keep a single seedling on flat land, and keep double seedlings on hillside land.
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