First, according to the local climate and timely selection of land preparation, to avoid re-embarrassment, deep-spotting the land preparation, enough to apply farm manure as base fertilizer.
Second, timely sowing; oil sunflower adaptability, spring sowing area soil temperature stable above 10 °C can begin sowing. Oil sunflowers are afraid of crops. When planting, consider flowering and harvesting to avoid the rainy season.
Three, mu sowing volume and sowing depth; sowing rate per acre is generally 400 to 500 grams, sowing depth is generally about 3 cm.
Fourth, rational close planting: According to the soil conditions, good land well-illuminated plots keep seedlings 3300-3500 strains / acre, generally 3500-3800 strains / acre.
V. Field management: timely weeding at the seedling stage, if there is no special dry growing stage, watering should be minimized as early as possible to facilitate seedlings, and timely watering should be carried out during the filling period. The amount of fertilizer to be applied is generally between 5 and 15 kg of urea per hectare, 10 to 15 kg of urea phosphate, 10 to 15 kg of potassium sulfate, or 30 to 40 kg of M.S. compound fertilizer. From bud stage to flowering stage, topdressing urea from 10 to 15 kg/mu can also be arranged according to actual local conditions.
6. Timely Harvest: When the back of the disk turns brown, the grain moisture content can be harvested when it is less than 14%.
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