Comprehensive evaluation on production performance and nutritional quality of different forage sorghum varieties in the wind-sand grassy flat area of Yulin
To screen for high-yielding and high-quality forage sorghum varieties suitable for inter-membrane cultivation in the Yulin wind-sand grassland area,a randomized block experiment was conducted with seven varieties:Haishi(G1),F1497(G2),Runbao(G3),Dajiang 1180(G4),Longcao No.1(G5),Jintianza No.3(G6),and Jinmu No.1(G7),with three replicates for each treatment.The agronomic traits,grass yield,water use efficiency,and nutritional quality of different forage sorghum varieties for fodder were analyzed,and a grey relational evaluation was performed.The results showed that the plant height(350.83 cm)of G1 was significantly lower than G2(382.90 cm)(P＜0.05),but higher than the other treatments.Stem thickness(24.25 mm)of G1 was higher than the other treatments.Fresh grass yield(58.77 t/hm2)of G1 was significantly lower than G4(P＜0.05),but significantly higher than the other treatments except for G3(P＜0.05).Dry grass yield(21.32 t/hm2)of G1 was higher than the other treatments.Water use efficiency[22.14(kg/hm2)/mm)]of G1 was higher than the other treatments.Crude protein content(4.10％)of G1 was significantly lower than G5(P＜0.05).Sugar hammer degree(17.48％)of G1 was only lower than G6.Relative feeding value(178.19)of G1 was higher than G2,G3,and G4.In the grey relational evaluation,G1 ranked first in the degree of association.The study indicates that the high-yielding and high-quality forage sorghum variety suitable for inter-membrane cultivation in the Yulin wind-sand grassland area is G1.
万方数据
维普
