How long is the sunflower blooming? Management skills of sunflower florescence

We grow sunflowers mainly for sunflower blooming, but not everyone knows about sunflower flowering. So how long is the sunflower blooming? How to manage the sunflower during its flowering period? Today, I will follow the editor to take a look at the sunflower florescence time and sunflower florescence management skills for your reference.

Sunflower florescence-time

Sunflowers can be used in all seasons, mainly in summer and winter. The florescence can reach more than two weeks. In addition to being similar to the sun in appearance, sunflower has bright and generous flowers that are suitable for ornamental decorations. Her seeds are of more economic value. They can not only make popular sunflower seeds, but also extract high-grade edible sunflower oil with low cholesterol. Sunflower varieties can be divided into "general ornamental" varieties or "edible" varieties, the general ornamental varieties are characterized by short plants, usually no more than half a meter, so they are suitable for planting in pots, while edible varieties have taller plants. planted in the soil of a general open-air nursery, it can grow to more than 2 meters. Sunflower grows very fast and usually blossoms after about two months. Its flower pattern can be divided into single, double or single or multiple flowers, and its flowering period is quite long and can reach more than two weeks.

Sunflower florescence-- Management skills

1. Ensure an adequate supply of water and fertilizer

Sunflower basically ends from budding to flowering, which is the key period for the formation of seeds and disk. In this period, the plant water demand accounts for more than 60% of the lifetime water demand, if the water supply is insufficient, it will cause seed stunting and increase the empty shell rate. Therefore, during this period, adequate water supply should be ensured, and proper topdressing combined with watering should be applied with 5kg urea and 10kg diammonium per mu.

2. Implement artificial assisted pollination.

Sunflower is an insect-pollinated and cross-pollinated crop, which is pollinated by bees and insects under natural conditions. In the case of insufficient bee sources and insects, artificial pollination can also improve the seed setting rate of sunflower pollination. Artificial pollination can be cut into a disk as big as a disk, padded with cotton wool to make the central part slightly convex, wrapped with flannelette or gauze, and a handle is tied on the back to make a pollination puff. When pollinating, hold the pollination puff with pollen in one hand, hold the disk in the other, press the disc slightly with pollination puff and gently pat it a few times to let the pollen fall on the stigma. Artificial pollination should be carried out after the dew dissipates at about 9 o'clock in the morning to 12:00, when there are many pollen grains and full of vitality, generally two or three times in a row, the first time when half of the flowers in the disk are blooming. the second and third times when the flowers in the center of the disk bloom.

3. Carry out sunflower borer control.

From past experience, it is the active period of the adult sunflower borer, which usually lurks during the day and begins to be active in the evening. ☆ is forbidden to spawn on the sunflower disk, and the egg stage is 3-4 days to hatch larvae. The control of sunflower borer larvae can be sprayed with 8000 international units / mg bt wettable powder 100g per mu after 50% flowering, diluted with talc powder into dust.

This is the end of the information about the sunflower florescence. I hope this article will be helpful to you.