10 Key Measures to Increase Soybean Yield

1. Thinning: On the basis of full stands of soybeans, thin the seedlings when the two opposite simple leaves unfold, generally increasing yield by 10-20%.

2. Pressing seedlings: When the first compound leaf of some soybean seedlings unfolds, choose a sunny midday and use animal power or a machine-drawn wooden roller to press along the ridges, which can increase yield by 8.5-10%.

3. Pinching: At the early flowering or full flowering stage of soybeans, remove about 2 cm from the top of the main stem by hand, which can increase yield by 7.2%-10.8%.

4. Applying rare earth: Mix 2 kg of rare earth per 1 kg of soybean seed for seed dressing, or spray once each with rare earth solutions at concentrations of 0.03-0.04% and 0.08 during the soybean seedling stage and early flowering stage, which can increase yield by 15-20%.

5. Spraying ammonium molybdate: Before and during soybean flowering, spray once each with a 0.05% ammonium molybdate solution; before flowering, spray 25-30 kg per 667 sq m, and after flowering, spray 40-50 kg per 667 sq m, generally increasing yield by 5-10%.

6. Spraying paclobutrazol: From soybean branching to the early flowering stage, spray 50 kg of a 250 ppm paclobutrazol solution per 667 sq m, which can increase yield by about 20%, and also controls soybean wrinkled mosaic disease and prevents lodging.

7. Spraying sodium bisulfite: Use 8 g of sodium bisulfite per 667 sq m, dilute with 50 kg of water, and spray once each at the early flowering and full flowering stages of soybeans, increasing yield by an average of 10.5%.

8. Spraying triiodobenzoic acid: At the early flowering and full flowering stages of soybeans, spray once each with solutions at concentrations of 100 ppm and 200 ppm, which can increase yield by 5-23%.

9. Spraying yield-increasing ling: From the full flowering stage to the pod-setting stage of soybeans, spray twice with a 20-30 ppm yield-increasing ling solution, with an interval of 7-10 days, spraying 50-70 kg per 667 sq m each time, which can increase yield by 3-15%.

10. Spraying 802 growth regulator: Use 20 mL per 667 sq m, dilute with 40 kg of water, and spray at the soybean pod-setting stage, increasing yield by an average of 10.7%.