How to grow Sunflower planting methods and points for attention

When it comes to sunflowers, I believe we are no stranger to sunflowers, they are too common in life. Sunflower is still quite common in our life, and its seed is the sunflower seed we often eat, which has high nutritional value. So how to grow sunflowers? I believe that friends who have never planted are very confused. Here is the editor to teach you the skills of planting sunflowers.

How to grow sunflowers

1. Seed selection. Prepare sunflower seeds, there are different varieties of sunflowers, if you want to plant in flowerpots, you can use ornamental small sunflower seeds, planted in a large area of flower beds or yards, it is recommended to use edible types.

2. Sowing seeds. Sowing time is recommended in April, the temperature is about 20 degrees Celsius when sowing, remember to ensure the freshness of the seeds, do not appear mildew, bury the seeds in the soil, about 3 days can germinate, 5 days or so can be transplanted.

3. Transplant. When the sunflower seeds germinate and protrude from the soil, they can be transplanted into a large basin when the cotyledons are opened. After transplanting, it is necessary to pour enough water to fix the root, and be sure to pour it thoroughly. It is recommended to put it in a sunny place indoors, and if you want to put it in the sun, you should water it regularly.

4. Maintenance. When there are about 3 to 4 pairs of real leaves, spray some potassium dihydrogen phosphate on the leaves every few days to promote plant growth. Sunflowers should be fertilized during their growth. At this time, it must be organic fertilizer after maturity.

Sunflower planting methods and matters needing attention

The seedling can be raised by point plate and nutrition bowl, and the seedling substrate can be mixed with peat, vermiculite and sand according to the ratio of 2: 1: 1, and a little organic fertilizer can be mixed at the same time. Potted sunflower seeds are small, the top soil capacity is relatively weak, sowing is not easy to be too deep, generally about 1 cm. Covering soil after sowing, light suppression, such as raising seedlings in winter and spring, can be covered with plastic film to keep warm and shorten the time of seedling emergence. Keep the soil moist after sowing, generally 3 to 5 days in summer and 5 to 10 days in winter and spring.

Transplanting as early as possible can not only shorten the slow seedling time, but also prevent the emergence of "tall seedlings". The plant can be transplanted when it grows a pair of true leaves. After two weeks of sowing, sunflower seedlings can grow strong roots. The root system of sunflower seedlings is very strong, which is the basis to ensure a high survival rate of transplanting.

After water and fertilizer management is planted, water should be properly controlled to prevent overgrowth. After budding, the plants should be properly watered according to their growth conditions to meet their growth needs. It is not recommended to apply base fertilizer to avoid excessive fertility and make the stem too thick. Topdressing or foliar spraying can be applied according to plant growth.

The incidence of diseases and insect pests in sunflower is low, the main diseases are bacterial leaf spot, rust, stem rot, powdery mildew and black spot, and the main pests are aphids, blind bugs, red spiders and beetles.

Management method of sunflower florescence

1. Ensure an adequate supply of water and fertilizer

The period from budding to flowering is an important period in the sunflower's life. During this period, the water requirement of the plant accounts for 60% of the whole growing period, and if the water supply is insufficient, it will cause seed dysplasia. Therefore, during this period, to ensure adequate water supply, combined with watering appropriate fertilization, urea plus diammonium once a week.

2. Implement artificial assisted pollination.

If the family is growing ornamental sunflowers, this step can be omitted. Under natural conditions, sunflowers are pollinated by insects such as bees. Sunflowers planted in the family can be assisted by artificial pollination in order to improve the pollination rate. Use cotton cloth, cartons, cotton wool to make a powder puff (powder puff shape for makeup can be used directly, but it is more troublesome to pollinate with smaller volume). Prepare the pollen in advance, sprinkle it on the pollination puff and gently press it on the disk. The pollination time was chosen at 9: 12 o'clock, when the dew had just receded and there was more pollen. Pollination usually takes 2 or 3 times.

3. Carry out sunflower borer control.

Sunflower blossoms attract many insects, mainly the sunflower borer. The sunflower borer feeds on sunflower seeds and forms crisscross tracks in the disk. On rainy days, the disk will gradually rot. Sunflower blooming is the active period of sunflower borer, which is latent during the day and active at night. Talc powder can be diluted into dust for spraying, once every 2 or 3 days.

Through the above, I believe we all know how to grow sunflowers! Although we see a lot of sunflowers, but rarely planted, there is a chance to take the family children a kind of planting oh! Wait for the sunflower to sprout slowly, grow up and blossom, bear fruit, feel the miracle of life!