Sunflower seed planting method

How to plant sunflowers? Raising sunflowers well is actually very simple, not too big a basin, not too much soil, not even too much care. Why don't you try it too!

Step 1: seed selection

Seed selection is very important. There are different varieties of sunflowers, there are edible, that is, the kind of melon seeds, it is said to grow up to 3 meters high, of course, that kind of flowerpot is also very large, the flowers are also huge. The balcony is generally planted at home, or it is better to use a small flowerpot, so you should choose the seeds of dwarfed ornamental sunflowers.

Step 2: sow seeds

(1) time-it is suggested that after the beginning of April, the temperature can be stabilized around 20 degrees before sowing. At this time, the seeds do not need to be soaked in advance and thrown into the soil. They can germinate in 3 days and transplant in 5 days.

(2) Seedling soil-the seeds cannot germinate for a long time when the temperature is low. At this time, if the soil used to raise seedlings is the old soil from other plants planted last year, it is very likely that there are insect eggs in the soil layer, and then the seeds have not germinated and the eggs hatch first. At this time, the melon seed meat of sunflowers becomes the best food for insect larvae!

(3) Seedling pot-you can buy a special pot for raising seedlings, which is the one with a transparent lid on it, so as to prevent water from evaporating and to see clearly the germination of seeds. Of course, it can also be planted directly in a large basin, but remember to cover the surface with a layer of cling film at the end of the water, so as to keep the water from evaporating too fast, and there is no need to replenish water during emergence.

To sum up: if you use ordinary soil, sow seeds in hot spots so as not to be eaten by bugs; if you use advanced seedling soil, it's okay to sow early, but you still have to wait a long time to sprout. So don't be impatient, you'd better sow the seeds later.

1. Sowing date

The sowing date is mainly determined by the local air temperature. When the 5em temperature in the plough layer of the soil is stable at 8-10 ℃ for 3-4 days, the seeds can be sown. Early sowing in spring can make full use of light, heat and water resources, avoid the rainy season and reduce the harm of Sclerotinia sclerotiorum in full flowering period. at the same time, early sowing can mature early and avoid the harm of early frost.

2. Sowing method

There are two main sowing methods of sunflower, namely, mechanical precision sowing and artificial sowing. Mechanical precision sowing can directly sow seeds in wet soil, turn over the upper layer with small area, reduce evaporation, preserve soil moisture, reduce labor intensity, improve work efficiency, and save seeds at the same time. Artificial seed is suitable for insufficient soil moisture and is a commonly used sowing method when water replenishment measures are needed.

3. Seeding quantity

The sowing rate should be determined according to the planting density, 1000-seed weight, seed germination rate, as well as the field loss rate. Generally, the sowing rate per hectare is 12.5-15kg.

4. Sowing depth

The sowing depth should be determined according to the soil type and soil moisture. In moist soil, saline-alkali soil and soil with heavy texture, the sowing depth should be shallow, generally about 3cm; in arid areas, the sowing depth on wind-blown sand soil should be 5-7cm, and it should be suppressed in time after sowing, so as to prevent the seeds from running away from soil moisture, so that seeds can closely touch the soil, absorb moisture quickly, emerge early, and be suitable for sowing depth, which can not only ensure the emergence rate, but also avoid the harm of soil bacteria to achieve seedling Qi and seedling strength.

Time: 2019-06-12 Click: