Effects of Soil pH on Agronomic Characters and Yield of Industrial Hemp in Jilin Province

In order to improve the adaptability and yield of industrial hemp, different varieties of industrial hemp were planted in different pH soils in Jilin Province, and their field agronomic characteristics and yield were observed and analyzed.The results showed that the agronomic traits of the same variety planted on different pH soils were different, and the agronomic traits with the greatest difference were the technological maturity date and the proportion of male and female plants; Different pH soils also had effects on stem diameter and plant height, with the decrease of soil pH, the stem diameter of the same variety gradually decreased; Except that Nongan-3 was slightly different, the plant height of the tested varieties from high to low was Fanjiatun ＞ Liaoyuan ＞ Tongyu in the three experimental plots. The stem yield, general hemp yield and long hemp yield of Wangan 1 and Huoma 1 in Fanjiatun were higher than in Tongyu and Liaoyuan, and the highest general hemp yield were 3 127.74 and 3 216.18 kg·ha^-1, respectively, which indicated that these two varieties were suitable for planting in neutral soil and conducive to increasing yield.In conclusion, industrial hemp is suitable for planting in neutral soil.