How many days does it take for sunflowers to sprout
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How many days does it take for sunflowers to sprout
Sunflowers are plants that germinate very quickly, taking only 7 days from sowing to germination. It is usually sown in March of spring, and can also be sown in June-July. After sprouting, it is necessary to check the seedlings and supplement them in time, thin the seedlings early, determine the seedlings, and do a good job of intertilling and weeding to make them grow more vigorously.
Sunflower seedling time
Sunflowers can sprout within a week after planting. After sprouting, it is necessary to check and supplement the seedlings in time. For the missing seedlings, it is necessary to transplant with soil or germinate and resow them in time. Sunflowers usually take 7 days to germinate from sowing. If farmers sow in autumn, the long sunshine time and fertile soil can effectively improve the seed germination rate. It takes 25 days from budding to flowering, and 50-60 days from sowing to flowering. The growth cycle of sunflowers: 100-110 days for spring sowing and 85-90 days for summer sowing. It is better to sow late rather than early in summer, and it can be sown after June 25th to the first ten days of July, so that the flowering period of about 10 days can avoid the rainy season.Sunflower sowing time and method
Sunflowers can be sown in March of spring or June-July of summer. These two periods are suitable for sowing sunflowers, and the germination rate of seeds is very high. It can also be sown at other times, but it will be difficult for the seeds to germinate in the soil, or they may not germinate at all. The planting technology of sunflowers is simple. First, collect the pollen of sunflowers with tools such as brushes, then apply the pollen to the flower disk to make excellent seeds, soak the seeds in clear water for 6 hours to promote germination, and after planting them in the soil, they can root and sprout more easily. Soil selection: generally, sunflowers are not strict with soil requirements, and they can usually be planted in garden soil. However, if you want to grow sunflowers in pots, you need to prepare a container with a diameter of 10cm, and use garden soil mixed with decomposed leaf soil as the potting medium to make it grow better. Sowing management: Before sowing sunflowers, the soil should be deeply turned over 20-22cm, and 2-3 seeds should be sown every 30-40cm in the trench, with a sowing depth of 3-5cm. Then, sprinkle some water on the soil, and for potted plants, sow directly into the potting soil, control the temperature at 20℃, and place it in the sun to germinate.How to manage sunflowers after they sprout
1. Check and supplement seedlings. During sowing, if there are missing rows, supplement them in time. After sprouting, if there are missing or broken rows, germinate and resow them immediately to ensure a full crop. 2. Thin and determine seedlings early. In order to raise strong seedlings, manually thin and determine seedlings when there is a pair of true leaves, and finish determining seedlings when there are two pairs of true leaves, leaving them evenly spaced and strong, not double seedlings. 3. Intertill and weed. It is necessary to do early and deep intertilling. After the seedlings emerge, intertill early, with a depth of 16-18cm, to prevent pressing and injuring the seedlings. After determining the seedlings, do the second intertilling and manually remove the weeds between the plants. Watering after sunflower seedlings sprout: Watering should be done in a timely manner during the growth period, otherwise the leaves will easily dehydrate and wilt; However, excessive watering can cause sclerotinia disease, leading to root or stem rot. How to water depends on climatic factors, pot size, and plant growth stage, but generally, moderate watering is sufficient. Fertilizing sunflowers after they sprout: After sunflowers sprout, top-dress with fertilizer twice, generally 25 days after sprouting and when there are 7-8 true leaves, water the first time and apply 10-12.5 kg of urea per mu, water the second time during the budding period, and the third time during the flowering period, and apply 20 kg of urea per mu at the same time.Declaration: This article "How many days does it take for sunflowers to sprout" is compiled by flower friends. If there is any improper content, you can contact us to modify it. If this content unintentionally infringes your rights, contact QQ: 58589584 to delete it immediately.
Knowledge expansion
How to prevent birds from eating sunflowers in the field
To prevent birds from eating sunflowers in the field, you can set off fireworks in the planting area, which can scare away the birds. However, this method is not permanent. You can also stick several straw men in the field and hang clothes on them to create the illusion of a person being present, which can also scare away the birds. Additionally, based on the type of birds, you can play the sounds they fear in the planting area, which also has a good deterrence effect and they will not dare to approach. Moreover, it is necessary to harvest in time after maturity to reduce damage.
What kind of fertilizer is good for planting sunflowers
Organic fertilizers such as animal manure, poultry manure, compost, green manure, and soil manure can be used as base fertilizers for planting sunflowers, and an appropriate amount of chemical fertilizers should be matched. Boron fertilizer has a good yield-increasing effect on sunflowers and should be applied more. During the flowering and filling period, foliar application of urea solution can significantly increase yield. Spraying a 1:3:3 solution of nitrogen, phosphorus, and potassium during sunflower flowering can greatly increase yield.
Planting sunflowers with fertilizer
The role of base fertilizer is to meet the nutrient needs of sunflowers during the entire growth period. Base fertilizer should be mainly organic fertilizers, such as animal manure, poultry manure, compost, green manure, and soil manure, which have long-lasting effects and are rich in nutrients, beneficial for improving soil fertility and sunflower yield.
Additionally, we should match an appropriate amount of chemical fertilizers to meet the seedling stage's demand for quick-acting nutrients and to benefit the later growth, especially when no organic fertilizers are used or when the amount of organic fertilizers is small, it is necessary to supplement with the corresponding chemical fertilizers.
Top-dressing sunflowers
Sunflowers are usually fertilized with 10-15 kg of urea or 50 kg of ammonium carbonate per mu, applied in strips or holes. Boron fertilizer has a good yield-increasing effect on sunflowers and should be applied more, either by mixing 150g of borax with seeds or by spraying a borax solution before flowering.
Fertilizing sunflowers during the growing period
When sunflowers enter the flowering and filling period, the nutrient growth transforms into reproductive growth, and the demand for fertilizers reaches its peak. Foliar application of urea solution can significantly increase yield. Spraying a 1:3:3 solution of nitrogen, phosphorus, and potassium during sunflower flowering can significantly increase yield and further improve sunflower quality, ensuring that there are less than 320 seeds per 50g.
Fertilizing sunflowers during the fruiting period
In the later stage of sunflower growth, it is easy to lack fertilizers. When it is difficult to apply base fertilizers, it is necessary to use foliar fertilization. A diluted potassium dihydrogen phosphate solution, or mixed with urea, can be sprayed every 7 days during the flowering period, for a total of 2 times.
Correct method of fertilizing sunflowers
Before planting sunflowers, the fertilizers can be evenly mixed into the soil, or 2-3cm deep holes can be dug around the plants to apply the fertilizers. Pay attention to the depth of fertilization, not too close to the roots, and apply it in the wet soil layer to better发挥 the fertilizer effect.
Precautions for fertilizing sunflowers
Sunflowers absorb a large amount of nutrients rich and quickly from the flower disk formation to the flowering period, which is the key period for nutrient absorption. During this period, the nutrient absorption accounts for about three-quarters of the total nutrients. From seedling emergence to flower disk formation, more phosphorus is needed, from flower disk formation to the end of flowering, the most nitrogen is needed, and from flower disk formation to wax maturity, the most potassium is absorbed.
What is the best fertilizer for sunflowers
Generally, fertilizers containing nitrogen, phosphorus, and potassium are needed to ensure the normal growth of sunflowers. If nitrogen fertilizers are applied to sunflowers, they can promote the growth of branches and leaves. Additionally, applying an appropriate amount of phosphorus fertilizers can promote the growth of roots and new buds, while applying potassium fertilizers can improve the disease resistance of the plants and increase yield and quality.
Sunflower fertilizing time
Generally, fertilizing sunflowers focuses on spring and summer, as these are the periods when the plants grow most vigorously and require sufficient nutrients for growth, so fertilizers need to be applied in a timely manner during these stages.
What fertilizer to apply to sunflowers
Generally, fertilizers containing nitrogen, phosphorus, and potassium are needed for sunflowers to ensure normal growth. If nitrogen fertilizers are applied to sunflowers, they can promote the growth of branches and leaves.
In addition, applying an appropriate amount of phosphorus fertilizers can promote the growth of roots and new buds, while applying potassium fertilizers can improve the disease resistance of the plants and increase yield and quality.
How to fertilize sunflowers
Sunflowers absorb less fertilizer in the early stage and more in the later stage, so the amount of fertilizer needs to be controlled when fertilizing. Moreover, sunflowers require more potassium, followed by nitrogen, and the least phosphorus. Usually, during the flowering period, fertilizers can be applied by digging trenches to water, applying urea and potassium sulfate, with a fertilizing depth of about 10cm.
Precautions for fertilizing sunflowers
When fertilizing sunflowers, it is best to follow the principle of absorbing nutrients in a certain proportion and coordinate the various nutrient elements. Do not apply a single fertilizer, otherwise it will cause a deficiency of a certain element in the plant and affect normal growth.
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