Sunflowers are mainly pollinated by insects. Stocking of bees around the sunflower field during the flowering period can greatly increase the yield. Generally, they are placed at a ratio of one box of bees per 3-5 mu. Where there are not enough bees and insects, artificial pollination should be carried out. If the sunflower is exposed to high temperatures, rain, or sunshine, it will affect the normal conditions and result in a reduction in yield. Therefore, the conditional plots can be watered once during the flowering period to reduce the field temperature, increase the humidity, and increase fruitfulness. Bud flowering period is also a time when sunflower is prone to various pests and diseases. It is necessary to strengthen forecasting, timely detect pests and diseases and take preventive measures. NINGBO AUTRENDS INTERNATIONAL TRADE CO., LTD , https://www.metests.com