Effects of mixed sowing of Qingtian No.1 and leguminous forage in Sanjiangyuan region on forage yield and quality
The experiment explored the impact of mixed sowing Qingtian No.1 with leguminous forage on the yield and quality of forage.The experiment mixed the grass family forage Qingtian No.1 with three kinds of leguminous forages,and used a randomized block design,setting up four monoculture treatments(A1,A2,A3,A4)and six mixed sowing treatments(B1,B2,B3,B4,B5,B6),totaling 10 treatments,each repeated three times.The results showed that the B3 treatment(Qingtian No.1∶bean=4.5∶1)had significantly taller plant height and larger leaf area compared to other treatments.The B5 treatment(Qingtian No.1∶bean=7∶1)had the highest fresh forage yield,41 400 kg/hm2,which was a significant increase of 72.5％compared to the monoculture of Qingtian No.1(A1)(P＜0.05),and the B6 treatment(Qingtian No.1∶feed pea=7∶1)was next,with a fresh forage yield of 38 500 kg/hm2.The nutritional component content of the forage in each mixed sowing treatment was significantly higher than that of the monoculture of Qingtian No.1(A1)(P＜0.05),and significantly lower than that of the monoculture of feed pea(A2)(P＜0.05).The B6 treatment had significantly higher crude protein,crude fat,lignin,and soluble sugar content than other mixed sowing treatments(P＜0.05),which were 16.10％,7.18％,8.80％,and 12.42％,respectively,and the feed pea(A2)had the highest nutritional content among the three kinds of leguminous forages.The comprehensive evaluation results of the membership function showed that the membership function value of the B6 treatment was 0.817,which belonged to the excellent category,and was a Grade Ⅰ.The study suggests that the mixed sowing ratio of Qingtian No.1 to feed pea at 7∶1 has better indicators than other varieties,and is suitable for promotion and planting in the Golog area of the Sanjiangyuan region.
Sanjiangyuan regionmixed sowing of grass and leguminous forageproduction performancenutritional value
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