Oil Sunflower is a common oil crop, not only the main origin of oil, but also can be used as an ornamental

Crops. And because oil sunflower has a strong adaptability and many other advantages, so planting limitations are also very wide. The above small series to tell you about sunflower high-yield cultivation techniques.

1. Select the superior varieties of oil sunflower: oil sunflower cultivation should select high and stable yield and high quality of the excellent varieties.

2, soil preparation must be precise: soil preparation is often a key to determine the development of crops, so in the sunflower must be precise soil preparation link. Turn about 23cm deep before harvest, rake the ground evenly and level it out, apply excessive fertilizer according to the soil fertility.

3, harvest time should be suitable: oil sunflower spring sowing in late march-early April, plastic film cover harvest can be early half a month, summer harvest should be in June-july. Harvest method to dot better, put 2 seeds per hole, sunflower plant spacing should also be appropriate.

4. Field management of oil sunflower

(1) real-time check seedlings, seedling and fixed seedling: oil sunflower seedlings to make up the lack of real-time, if the density is too large, but also to continue to seedling, seedling time to master.

(2) intertilling, weeding and soil-cultivating: during the growing period of oil sunflower, intertilling should be continued for 2-3 times, and soil-cultivating should be connected. The important goal is to avoid lodging of oil sunflower.

(3) forked leaves and assistant pollination: the branches of oil sunflower should be removed in real time to promote the development of main stem disk. Wild assistant pollination can improve the seed-setting rate of oil sunflower.

(4) fertilizer and water treatment of oil sunflower: spring-sown oil sunflower does not need topdressing under the condition of sufficient basal fertilizer, summer-sown oil sunflower can apply 5-7 kg urea per mu in seedling stage.

(5) the pest control of oil sunflower: during the flowering period, important pests such as sunflower borers and diseases such as downy mildew and rust should be controlled in real time.

Oil sunflower high-yield cultivation technology is about the above points, the big bias and other crops are almost the same, but want oil sunflower eventually high-yield, still need to be carefully planted.