Summary:
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Proper selection of high-quality onion varieties.
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Controlling seeding time.
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Effective field management.
In the process of onion cultivation, early bolting is a common issue that can lead to reduced yields. To effectively prevent this from happening, here are several feasible methods:
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Choose High-Quality Varieties: When planting onions, it is important to select varieties that are resistant to bolting, especially those that can still grow normally in low-temperature environments. Varieties with strong winter hardiness and resistance to bolting are the best choice, as they can significantly reduce the risk of early bolting.
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Control Seeding Time: Timing of seeding is crucial to prevent early bolting in onions. Onion seedlings need to reach a certain size before completing vernalization under low temperatures. Therefore, determining the seeding time is essential. Generally, seeding should be done in August or September, with temperatures maintained around 15°C. Transplanting should occur around October, which can effectively reduce the risk of seedlings bolting prematurely. Additionally, attention should be paid to controlling seeding density, as well as proper watering and fertilization to prevent rapid seedling growth.
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Field Management: Before the soil freezes, timely irrigation of winter water is necessary to ensure optimal irrigation effects when frost occurs. Both too early and too late watering can increase the risk of bolting. After the regreening stage, timely topdressing should be carried out, and attention should be paid to disease prevention and soil moisture management to maintain soil moisture without excessive wetness.
By implementing the above measures, onion bolting can be effectively prevented, thereby improving both the yield and quality of onions and ensuring smooth cultivation.
