When does the sunflower mature? The ripening time of the sunflower is closely related to the sowing time. The sunflowers in spring are generally mature from July to September. When the flowers bloom, the yellow flowers in the sunflower field are in full bloom, and the seeds are harvested from July to September. It can be preserved for a long time after drying. At the same time, the varieties of sunflowers are different and the maturity time is slightly different.
Sunflowers can be planted in all seasons, often in summer and winter. The flowering period can be more than two weeks. Except for the appearance of the sun, the flowers are bright and generous, suitable for ornamental decorations. The seeds are more economical and can be used as a substitute. The favorite sunflower seeds can extract high-grade edible sunflower oil with low cholesterol. Let's take a look at how sunflower seeds are grown together!
For the cultivation of selected land preparation sunflowers, the land should be flat, the fertility should be medium, the irrigation and drainage should be convenient, and the soil with relatively small soil viscosity should not be heavy. The seedlings are progeny, and peat soil is suitable for sowing. Seed dressing with new high-fat membrane before sowing can repel underground pests, isolate virus infection and increase seed germination rate.
The sowing time for timely sowing sunflower is generally from March to April, and the suitable temperature for sowing is 18 to 25 ° C, usually 5 to 7 days after sowing. The basic principle of sowing date selection is based on the regularity of salt and alkali, suitable early or late sowing, so that the seedlings avoid salt and alkali. Spring or summer sowing according to the growth period of the variety.
Chatian replanting sunflower is a dicotyledonous crop. It is more difficult to top out the soil. In addition, the soil preparation, the quality of the sowing is not high, or the soil surface of the rain after the sowing, or diseases, insects, rats, and birds are all harmful. . In order to ensure that the whole seedlings are broadcasted, it must be checked line by line in the seedling stage, and the seedlings should be replanted in time.
Interplanting seedlings and sunflowers should be planted early, prevent seedlings from being seeded, affecting the cultivation of strong seedlings, and even future yields. As for the saline-alkali land and heavy insect plots, the seedling time can be appropriately postponed. At the same time, the sunflower should be fixed early, which is conducive to the cultivation of strong seedlings, and is also conducive to the development of the flower disk. The seedlings should be carried out in two pairs of true leaves.
When is sunflower planted? The sowing time of sunflower is from March to April, the suitable temperature for sowing is 18-25 °C, and it is germinated about 5-7 days after sowing. The basic principle of sowing date selection is based on the regularity of salt and alkali, suitable early or late sowing, so that the seedlings avoid salt and alkali.
Spring or summer sowing according to the growth period of the variety. Adjust the sowing date according to the disease pattern to avoid the disease-prone season. Adjust the sowing date according to the growth characteristics, so as to avoid the high temperature weather above 28 °C during the flowering and filling period. The sowing method is on-demand, covering about 1 cm of soil, and about 50-80 days after sowing, the flowers vary slightly depending on the variety.
Sunflower growth cycle
1. Seedling stage: Sunflower is called seedling stage from emergence to bud, generally takes 35 to 50 days, and summer is 28 to 35 days. This period is the stage of leaf, flower primordium formation and floret differentiation. The sunflower seedling stage is the strongest stage of drought resistance of sunflowers. The growth of the shoots is slow, the roots of the shoots grow faster, and strong roots are formed quickly.
2, the bud period: sunflower from the bud to flowering generally takes about 20 days, for the vegetative growth and reproductive growth and advancing period, is also the most vigorous stage of life. This period requires the most fertilizer and water, accounting for 40-50% of the total fertilizer and water demand. If the demand for water and fertilizer is not met in time, the production will be seriously affected.
3, flowering period: sunflower flower disk from the opening of the tongue flower to the tubular flower is generally completed 6 to 9 days, from the second day to the fifth day is the flowering period, more open in the morning 4 to 6 o'clock, the next morning pollination The unpollinated branches can be kept for 7 to 10 days, but the self-pollination rate is only about 3%, and the cross-pollination rate is high.
4, maturity: sunflower maturity refers to the stage from flowering to maturity, spring sowing 25 ~ 55 days, summer sowing 25 ~ 40 days, different varieties have differences. Flowering pollination shield for about 15 days is the stage of seed formation. The ripening period of the sunflower needs to be sunny, the temperature difference of the mash is large and the soil moisture is suitable.
This article URL: When does sunflower ripening and planting techniques?
Another benefit of vitamins for the human body is that it can help the growth and development of the human body to operate normally, especially for teenagers, vitamins are one of the essential nutrients in the growth process. For example, vitamin D can well adjust the metabolism of some trace elements in the human body, and can also promote the absorption of calcium by the human body, maintain bone health, and maintain a balance between the blood phosphorus level and the blood calcium level in the human body.
Vitamin Efficacy,vitamin drink,The benefits of vitamins,vitamin water
YT(Xi'an) Biochem Co., Ltd. , https://www.ytherblifes.com