Effects of Planting Density and Variety on Lodging Resistance and Yield of Buckwheat
[Objective] To study the effects of different planting densities and varieties on the lodging resistance and yield of buckwheat. [ Method] A two factor completely randomized block design was adopted with 5 varieties, 3 planting densities, and a total of 15 treatment. The lodging resistance traits of buckwheat under different treatments were measured, including the length and outer diameter of the first, second, and third internodes, center of gravity height, apparent lodging rate and stem snapping resistance. The differences in economic traits, such as plant grain weight, 100-grain weight and plot yield were compared. [ Result] The apparent lodging rate of Xinong D4103 was significantly low-er than that of other varieties, and the plot yield of treatment P5M3 was significantly higher than those of P1M3 and P3M3. However, there were no significant differences in the apparent lodging rate and yield between the same variety and different planting densities. The correlation analysis results showed that the apparent lodging rate of buckwheat was significantly positively correlated with plant height, center of gravity height, number of main stem nodes and length of the second internode. There was significant positive correlation between length of the third in-ternode,outer diameter of the first internode and the apparent lodging rate of buckwheat. There was a significant positive correlation between plot yield and length of the first and second internodes. [ Conclusion] The variety had significant impact on the apparent lodging rate and yield. Xinong D4103 had good lodging resistance and could be used as a material for future research on lodging resistant varieties. The highest yield was obtained with a planting density of 750000 plants/hm2 for the ZiTQ13-05 variety, which was suitable for planting in northern Shaanxi.
万方数据
维普
