川西北地区甘农3号黑麦的生产性能和营养价值研究

Production performance and nutritional value of a new rye variety 'Gannong No.3' in Northwest Sichuan

摘要:

为研究甘农 3 号黑麦在川西北地区的适应性，以冬牧 70 为对照，测定了甘农 3 号黑麦 2018 和 2019 年在四川省红原、道孚和布拖 3 个试验点的株高、鲜草产量、干草产量和营养价值。结果表明：甘农 3 号黑麦的鲜草产量和干草产量显著高于冬牧 70(P＜0. 05)，株高、鲜干比与冬牧 70 无显著差异； NDF 含量显著低于冬牧 70(P＜0. 05)，ADF 含量显著高于冬牧 70，CP 含量显著高于冬牧 70(P＜ 0. 05)。2 个黑麦品种在红原和道孚点的生产性能显著高于布拖点(P＜0. 05)。甘农 3 号黑麦的生产性能和营养价值优于冬牧 70，适宜于在川西北地区推广种植。

Abstract:

The study was conducted to evaluate the adaptability of a rye variety‘Gannong No. 3’in Northwest Sichuan region，with the conventional variety‘winter grazing 70’as a control. The plant height，fresh grass yield， hay yield and nutritional value were compared between the two rye cultivars at three sites，Hongyuan，Daofu and Bu- tuo of Sichuan province in 2018 and 2019. Results showed that the nutritional value as well the fresh grass yield and hay yield of‘Gannong No. 3’were significantly higher than those of‘winter grazing 70’(P＜0. 05). However， there was no significant difference in plant height and fresh dry ratio between‘Gannong No. 3’and the control. By contrast，the NDF content of‘Gannong No. 3’was significantly lower than that of‘winter grazing 70’. The content of ADF is significantly higher than‘winter grazing 70’. The crude protein content of‘Gannong No. 3’was slightly higher than that of the control but there was no significant difference between the two varieties. The production per- formance indicators of two rye varieties in Hongyuan and Daofu were significantly higher than that in Butuo point in both years. Comprehensive analysis showed that the production performance and nutritional value of rye variety‘Gan- nong No. 3’were better than those of the‘winter grazing 70’，and‘Gannong No. 3’is suitable for cropping in North- west Sichuan.