1. Saplings: Soybeans are planted on the basis of the whole seedlings, and when the two leaflets are unfolded, the seedlings are planted and the yield is generally increased by 10-20%.
2. Pressing seedlings: When the first compound leaves of some seedlings of soybeans are unfolded, they are selected at noon on sunny days, and they are forced to use the animal power or the machine to induce hibiscus to suppress the growth, which can increase production by 8.5-10%.
3. Topping: In the initial flowering or flowering period of soybean, the top of the main stem is removed by hand by about 2 cm, which can increase production by 7.2% to 10.8%.
4. Application of rare earth: every 1 kg of soybean seed dressing with rare earth 2 kg, or in the soybean seedling period and initial flowering phase with a concentration of 0.03-0.04% and 0.08 rare earth solution sprayed once, can increase 15-20%.
5. Ammonium molybdate spraying: before soybean flowering and flowering, spraying once with 0.05% ammonium molybdate solution, spray 25-30 kg per 667 square meters before flowering, spray 40-50 kg per 667 square meters after flowering, generally increase production. 5-10%.
6. Spray paclobutrazol: In the soybean branching to the initial flowering period, spray 250ppm of paclobutrazol solution for 50g for every 667gm of frankincense, which can increase the yield by about 20%, and concurrently treat soybean wrinkle mosaic disease and prevent lodging.
7. Sodium bisulfite spray: 8 g of sodium bisulfite per 667 square meters, 50 kg of water, sprayed once in the initial flowering period and full flowering period of soybean, and the average yield increase was 10.5%.
8. Spraying triiodoformic acid: In the initial flowering and flowering stages of soybeans, spraying once each with a concentration of 100ppm and 200ppm, the yield can be increased by 5-23%.
9. Spray increase production spirit: In the soybean flowering period to the pod period, use 20-30ppm increase spirit solution spray 2 times, the middle interval of 7-10 days, spray 50-70 kg every 667 square meters, can increase production 3-15%.
10. Spraying 802 growth regulators: 20 ml per 667 square meters, watered 40 kg, sprayed during the soybean pod spray period, with an average yield increase of 10.7%.
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