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向日葵是异花授粉作物,开花期如果媒介昆虫数量少,结实率将显著降低。试验研究和生产实践证明,抓住适当时机,进行人工辅助授粉,来提高结实率,增产效果明显。
Sunflower is a cross-pollination crop, flowering if the number of vector insects, seed setting rate will be significantly reduced. Experimental research and production practice have proved that grasping the appropriate time and carrying out artificial pollination to improve the seed setting rate and increase yield is obvious.