向日葵是新发展起来的主要油料作物之一,也是因地制宜合理种植的重要经济作物。不同播期决定着葵花各个生育时期所处的环境条件,适宜的条件能制约葵花多种病害发生程度,对高产稳产有重要的作用,也是合理利用气候资源提高葵花产量的关键技术环节之一。为更准确给生产提供适宜的播期, Sunflower is one of the newly developed major oilseed crops and is also an important cash crop that is reasonably planted according to local conditions. Different sowing dates determine the environmental conditions during each growth period of sunflower. Appropriate conditions can restrict the occurrence of various diseases of sunflower, and play an important role in the high and stable yield. It is also one of the key technical aspects to increase the yield of sunflower by using climate resources rationally. In order to more accurately provide suitable sowing time for production,