Journal of Anhui Agricultural Sciences

[Objective]To explore the influence of seeding date of different maturity varieties on autumn-sown buckwheat under warmish climatic conditions and to screen the most suitable buckwheat varieties and optimal seeding date for promotion in the Taixing area.[Method]Three varieties with different maturity levels were used as experimental materials to analyze the effects of three seeding date on the growth duration,main agronomic traits,and yield of buckwheat under relatively warmish climatic conditions.[Result]With the onset of warmish climatic conditions,the seeding dates of various varieties were gradually postponed,and their growth durations were correspondingly shortened;the shortening was particularly pronounced in early-maturing varieties.However,the yield of early-maturing and medium-maturing varieties increased significantly following late sowing.[Conclusion]The commonly used late-maturing buckwheat variety—widely promoted in the Taixing area—can be replaced by late-sown early-maturing or medium-maturing varieties,thereby shortening the buckwheat growth period and facilitating flexible crop rotation.This substitution also increases buckwheat output,avoids frost damage,and achieves a synergistic effect of stable and high yield.