When do oil sunflowers usually be planted? What are the cultivation techniques?

Oil sunflower, referred to as oil sunflower, is one of the four major oil crops in China and the second largest oil crop in the world. When do the oil sunflowers usually be planted? What are the cultivation techniques?

I. the basic situation of oil sunflowers

1. Distribution of oil sunflower

Oil sunflower is the second largest oil crop in the world, which originated in America. It was introduced into China in the 15th century and is now widely planted all over the world. And oil sunflower is generally adaptable, drought-resistant and saline-alkali resistant, and the requirement for soil is not high, so it can be planted and survived in most areas.

two。 The value of oil sunflower

The seed press oil of oil sunflower is a kind of healthy nutritional oil, which is rich in vitamin E, does not contain erucic acid, cholesterol and aflatoxin, and has the effects of light, appetizer, moistening lung, tonifying deficiency, cosmetology, reducing blood lipid and so on. Pregnant women often eat sunflower oil is conducive to fetal development and growth rate plus breast milk, and plays an auxiliary role in the treatment of "gestational diabetes". In addition, the hybrid sunflower oil can also be used for industrial production, and the residue after pressing the oil can also be used as protein feed.

3. Yield and benefit of oil sunflower per mu

The yield of oil sunflower ranges from 200 kg to 400 kg per mu. Different varieties, planting conditions and management techniques will affect the yield.

Generally, the cost input of planting oil sunflower includes seeds, fertilizer, water and electricity, etc., which is about 500 yuan per mu. According to the purchase price of 6 yuan per kilogram, the income per mu is 1200-2400 yuan, and the benefit after excluding the cost is between 700-1900 yuan.

When do oil sunflowers usually be planted?

Oil sunflower is not strict on sowing date, as long as it can be planted in frost-free period, it is generally chosen to sow seeds when the soil layer of 10 cm is stable above 10 ℃.

Therefore, the general sowing time of oil sunflower is after the alarm of the lunar calendar, sowing in early March, no later than late April, otherwise it will affect the planting of the next crop.

Third, what are the cultivation techniques of oil sunflowers?

1. Preparation before sowing of oil sunflower

Although the oil sunflower has strong adaptability to the soil, if you want to obtain the oil sunflower with high quality and yield, you should choose the land with deep and fertile soil layer, flat terrain and uniform fertility, and turn the soil deeply before sowing, and apply compound fertilizer, farm manure or organic fertilizer per mu of land combined with irrigation.

two。 Sowing and Seedling Management of Oil Sunflower

The planting density of oil sunflower is 3000-6000 per mu, which is determined according to the soil fertility, the sowing rate of each hole is 1-2 seeds, and the soil is covered with plastic film after sowing; the seedlings should be checked and replenished in time during emergence to ensure that the whole seedlings are fixed before the third pair of true leaves are unfolded.

3. Field management technology of oil sunflower

The oil sunflower should carry out the first intertillage with the seedlings, the second intertillage after a week of seedling setting, and the third intertillage before sealing the ridges of the oil sunflower. This time, the intertillage should be combined with soil cultivation with a height of 10-15 cm, promoting deep roots and luxuriant leaves and resistance to lodging. If it is a large area of planting on the use of bumblebee pollination, small area of artificial pollination, the best time to sunny day around 10: 00 in the morning, once every two or three days, generally pollination three times.

4. Water and fertilizer management technology of oil sunflower

Before the oil sunflower disk grows, the demand for water and fertilizer is very small, and there is no need to topdressing and watering under the condition of applying sufficient bottom fertilizer to irrigate enough soil moisture. After the disk grows, it can be harvested when the stem of oil sunflower is yellow, the leaves are drooping, the back of the disk turns yellowish brown and the seed coat is hard by the end of June.

The above is the full introduction of the oil sunflower planting by the editor of Tuliu.com. Don't you want to try it for such a good-looking and good-looking oil sunflower?