Management of sunflower at different growth stages

Sunflower, also known as sunflower, China's planting area is also relatively extensive, sunflower growth ability is also relatively strong, can quickly adapt to a variety of environment. However, when planting on a large scale, we still need to do a good job in field management, and the management of sunflowers will change with its growth stage. So how to manage sunflowers at different growth stages? The following editor has brought specific management methods, let's take a look at it!

1. Seedling stage

The seedling stage refers to the period from the breaking of soil to budding of sunflower seedlings, and the time of seedling stage is about 2 months. In the seedling stage, the growth rate of the aboveground part of sunflower is relatively slow, mainly focused on the root growth. At this time, the leaf and disk primordium of sunflower gradually formed. It is when sunflowers have the strongest ability to resist drought. So we need to control the use of water. However, due to the weak growth ability of the aboveground part, it is necessary to apply fertilizer properly. Promote root growth, enhance root nutrient absorption capacity, and improve the growth rate of aboveground parts.

2. Budding stage

The budding stage is when the growth ability of sunflower is the strongest in the whole growth period, and the budding period is about 3 weeks. The demand for water and fertilizer will rise in a straight line, and vegetative growth and reproductive growth will be carried out together. Therefore, in the budding stage, it is necessary to strengthen fertilizer and water management, timely topdressing and reasonable watering. Then trace elements should be properly added to the fertilizer to ensure that the nutrients needed for the growth of sunflowers are met. Water should be watered regularly every day, and the amount of fertilizer and water during this period is nearly half of the total. If not enough, it will slow down the growth rate of sunflowers and even cause them to stop growing.

3. Flowering period

After the end of the budding period, the flowering period of sunflowers is not long, usually about 10 days, and the full flowering period will not exceed 1 week. In the flowering period, we also need to do a good job of auxiliary pollination, sunflower disk branch retention rate can reach about 7 days. Artificial pollination is very important for the growth of sunflowers, because the success rate of self-pollination of sunflowers is very low. If there is no auxiliary pollination, the yield will be seriously insufficient and the oil content of grains will be greatly reduced.

4. Mature period

The last important growth stage is the ripening period of the fruit, which varies according to the planting time. If sowing in spring, the maturity is about January-February, while if sowing in summer, the maturity is only about one month. Generally, it enters the stage of grain formation about half a month after the success of flowering and pollination. Pay attention to the weather during grain formation to prevent rain from affecting grain formation. Control the temperature difference between day and night, keep the ups and downs, and then control watering, not too much, to prevent the growth of sunflowers.

The above is a brief introduction to the management methods of sunflower in different growth stages. Sunflower field management is very important for large-scale growers. We should reasonably adjust the management methods according to the growth of sunflowers to ensure the healthy growth of sunflowers. That's all for today's introduction. This article is for reference only. I hope it can help you all.