Ten measures to increase soybean production
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Soybean cultivation techniques have been developed over time to optimize yield and quality. Here are some effective methods used by farmers to enhance soybean production:
1. **Transplanting Seedlings**: Soybeans are often transplanted when the seedlings have developed two fully unfolded leaflets. This practice helps improve plant density and results in a yield increase of approximately 10-20%.
2. **Pressing Seedlings**: During the early growth stage, when the first compound leaves appear, selected seedlings are pressed using animal power or machinery on sunny afternoons. This technique helps control excessive vegetative growth and boosts yield by about 8.5-10%.
3. **Topping**: At the beginning of flowering or during the flowering period, the top of the main stem is manually removed by about 2 cm. This encourages better nutrient distribution and increases yield by 7.2-10.8%.
4. **Rare Earth Application**: Applying rare earth elements to seeds or spraying a solution during the seedling and early flowering stages can significantly boost yield. A concentration of 0.03-0.04% during seedling and 0.08% during flowering can result in a 15-20% increase.
5. **Ammonium Molybdate Spraying**: Spraying a 0.05% ammonium molybdate solution before and during flowering improves nutrient uptake and overall productivity. Applications of 25-30 kg/667 sqm before flowering and 40-50 kg/667 sqm after flowering can raise yields by 5-10%.
6. **Paclobutrazol Spraying**: During the branching to early flowering stage, applying a 250ppm paclobutrazol solution helps control plant height, reduces lodging, and enhances yield by up to 20%. It also helps manage soybean mosaic virus.
7. **Sodium Bisulfite Spraying**: Using 8g of sodium bisulfite per 667 sqm mixed with 50kg of water and sprayed during the initial and full flowering stages can increase yield by an average of 10.5%.
8. **Triiodoformic Acid Spraying**: Spraying a 100ppm solution at the initial flowering stage and 200ppm at the full flowering stage can lead to a yield increase of 5-23%, depending on conditions.
9. **Growth Enhancer Spray**: During the flowering to pod formation stage, applying a 20-30ppm growth enhancer solution twice, with a 7-10 day interval, can improve yield by 3-15%. Each application uses 50-70kg/667 sqm.
10. **802 Growth Regulator**: Spraying 20ml of 802 growth regulator per 667 sqm with 40kg of water during the pod development stage can increase yield by an average of 10.7%.
These practices demonstrate how modern agricultural techniques can be applied to improve soybean productivity while maintaining plant health and sustainability. Farmers should choose the most suitable method based on local conditions and crop needs.