Detailed Guide to Management Methods for Sunflowers at Different Growth Stages
Sunflower is also called the sun flower, and its planting area in our country is relatively wide. Sunflower has relatively strong growth ability and can quickly adapt to various environments. However, when planting on a large scale, we still need to do a good job in field management, and sunflower management will change with its growth stage. So how should sunflowers be managed at different growth stages? Below, the editor brings the specific management methods. Let's take a look!
1. Seedling stage
The seedling stage refers to the period from when sunflower seedlings break through the soil to budding, and the seedling stage lasts about 2 months. During the seedling stage, the aboveground part of the sunflower grows relatively slowly, with growth mainly concentrated in the roots. At this time, the sunflower's leaves and flower disc primordium gradually form. This is when the sunflower has the strongest drought resistance. Therefore, we must control water application well. However, because the growth ability of the aboveground part is relatively weak, appropriate topdressing should be applied. This promotes root growth, enhances the roots' nutrient absorption capacity, and increases the growth rate of the aboveground part.
2. Budding stage
The budding stage is when the sunflower has the strongest growth ability throughout its entire growth period, and the budding stage lasts about 3 weeks. The demand for water and fertilizer rises sharply, and vegetative growth and reproductive growth proceed together. Therefore, during the budding stage, fertilizer and water management should be strengthened, topdressing should be done in time, and watering should be reasonable. Then trace elements should be appropriately added to the fertilizer to ensure that the nutrients required for sunflower growth are met. Watering should be done regularly every day, and the amount of fertilizer and water during this period is almost close to half of the total amount. If it is insufficient, it will reduce the sunflower's growth rate and may even cause growth to stop.
3. Flowering stage
After the budding stage ends, the sunflower enters the flowering stage. The flowering stage of sunflower is not long, usually about 10 days, and the full flowering stage will not exceed 1 week. During the flowering stage, we also need to do a good job in supplementary pollination. The retention rate of the sunflower's flower disc branches can reach about 7 days. Artificial pollination is very important for sunflower growth because the success rate of sunflower self-pollination is very low. If supplementary pollination is not carried out, it will lead to a serious shortage of yield, and the oil content of the seeds will also decline greatly.
4. Maturity stage
The last relatively important growth stage is the fruit maturity stage, and the fruit maturity stage will vary according to the planting time. If sown in spring, the maturity stage is about 1-2 months, while if sown in summer, the maturity stage is only about 1 month. Generally, about half a month after successful flowering and pollination, it enters the seed formation stage. During seed formation, attention should be paid to the weather to prevent rain from affecting seed formation. Control the day-night temperature difference well and keep it relatively large, then control watering and do not apply too much, to prevent affecting sunflower growth.
The above is a brief introduction to management methods for sunflowers at different growth stages. Field management of sunflowers is very important for large-scale growers. We should reasonably adjust management methods according to sunflower growth to ensure healthy sunflower growth. That is all for today's introduction. This article is for reference only, and I hope it can help everyone!