Effects of Concentrations and Treatment Periods of Polyazole on Inflorescence and Leaves Yield and Cannabidiol Content of Industrial Hemp
In order to explore the effects of polyazole spraying treatment on the yield and cannabidiol(CBD)content of industrial hemp inflorescence and leaves,the Yunma 8 was taken as the experimental material,five polyazole concentrations(C0:0 mg/L,C1:100 mg/L,C2:200 mg/L,C3:300 mg/L,and C4:400 mg/L)and two treatment periods(T1:the early stage of rapid growth,T2:the middle and late stages of rapid growth)were set in this study.Through the measurement and analysis of agronomic and yield traits,the most effective polyazole treatment concentration and period for increasing the yield and CBD content of industrial hemp inflorescence and leaves were screened.The results showed that 200 mg/L polyazole had the most significant effects on reducing the plant height of Yunma 8 and increasing its stem thickness and the number of branches at T1 period.From the results of the yield traits,with the increase of polyazole concentration,the yield of inflorescence,leaves and stems of industrial hemp all showed a trend of first increasing and then decreasing at both the T1 and T2 periods.Among them,the yield of industrial hemp reached the highest value under C2T1 treatment,with a yield of 3642.22 kg/ha for inflorescence and leaves.With the increase of polyazole concentration,CBD content of industrial hemp showed a trend of first increasing and then decreasing at the both periods.Among them,the highest CBD content was 3.53％by 200 mg/L polyazole treatment at T1 period.Based on the above results,it can be concluded that C2T1(200 mg/L and the early stage of rapid growth)treatment was the optimal treatment combination in this study.
Industrial hempPolyazoleTreatment concentrationSpraying periodAgronomic traitsInflorescence and leaves yieldCannabidiol content
万方数据
维普
