Oil sunflower belongs to a kind of sunflower, the linoleic acid content of the grain is as high as 58%-69%, it belongs to the high-grade vegetable oil, the market is in short supply, and the cultivated oil sunflower has better economic benefits. so. What is the yield of oil sunflowers?
The yield of oil sunflower is generally 200-250 kg per mu, and the yield varies greatly from variety, plot and cultivation method.
High-yielding seeds planted in plots with higher water and fertilizer conditions can reach a yield level of 370 kg per mu.
Oil sunflower belongs to potassium-loving crops, followed by nitrogen fertilizer in demand, the least phosphate fertilizer, and more fertilizer in the middle and late stages. Under normal circumstances, about 15 kg of potassium sulfate is added as the bottom fertilizer at the same time as the application of sufficient organic fertilizer, a nitrogen fertilizer is applied at the seedling stage, and a fertilizer is applied at the flowering stage, including about 20 kg of urea and about 15 kg of potassium sulfate. Ensuring the main stem fruit and removing branches in time is conducive to reducing nutrient consumption and improving ventilation and light transmission conditions.
During the flowering pollination period, beehives are placed in the plot to increase the pollination and fruiting rate. Two boxes of bees on 10 acres of land can meet pollination needs. If continuous rainy weather is encountered, artificial pollination can be performed. That is, every day at 9-11 a.m., put the flower discs of adjacent plants in a piece of shaking, 2-3 times in a row.