甘南高寒牧区3种饲草不同种植模式下的生产性能及经济效益

为明确甘南高寒牧区3种饲草不同种植模式的生产性能及经济效益,设置了秋播小黑麦(×Triticale Wittmack)套作式复种箭筈豌豆(Vicia sativa)、50%春播小黑麦混播50%箭筈豌豆、小黑麦秋季单播、箭筈豌豆春季单播和燕麦(Avena sativa)春季单播5个处理,分析不同处理的干草产量、营养价值(粗蛋白含量、酸性洗涤纤维含量、中性洗涤纤维含量)、经济效益及土壤养分含量。结果表明,秋播小黑麦套作式复种箭筈豌豆和50%春播小黑麦混播50%箭筈豌豆的干草产量分别为14.06和12.31 t·hm^–2,纯收益分别为6 286和11 011元·hm^–2,显著高于3种单播模式(P <0.05),且显著提高了土壤的全氮含量,可作为甘南高寒牧区高效种植模式进行种植推广。

Comparison of the production performance and economic benefits of three different forage planting models in the alpine grazing area of Gannan

To understand the production performance and economic benefits of three different forage planting models in the alpine grazing area of the Qinghai-Tibet plateau,five planting models(autumn seeding triticale intercropped with vetch,50%spring seeding triticale mixed with 50%vetch,autumn seeding triticale,spring seeding vetch,and oats)were used.Parameters,including the fresh weight,hay yield,nutritive value(crude protein content,acid detergent fiber content,and neutral detergent fiber content),economic benefits,and soil nutrient contents,were determined.The results showed that the treatments of autumn seeding triticale intercropped with vetch and 50%spring triticale mixed with 50%vetch,obtained hay yields of 14.06 and 12.31 t·ha–1,respectively,which was significantly higher than those of the other planting models(P<0.05).Their net incomes were 6286 and 11011 CNY·ha–1,respectively.In addition,these two planting models can significantly improve the soil total nitrogen content,and can be used as efficient planting models in the Gannan alpine pastoral area.