摘要: 为探究不同混播模式对牧草产量和营养价值的影响,本试验通过设置11种混播模式,即4个豆科牧草混播模式[杂花苜蓿(Medicago varia)+红豆草(Onobrychis viciaefolia)+百脉根(Lotus corniculatus)混播比例为1:1:1,1:1:2,1:2:1,2:1:1(Z1H1B1,Z1H1B2,Z1H2B1,Z2H1B1)],4个禾本科牧草混播模式[披碱草(Elymus dahuricus)+无芒雀麦(Bromus inermis)+扁穗冰草(Agropyron cristatum)混播比例为:1:1:1,1:1:2,1:2:1,2:1:1(W1P1B1,W1P1B2,W1P2B1,W2P1B1)]和3个豆科禾本科牧草混播混播模式[杂花苜蓿+红豆草+百脉根+披碱草+无芒雀麦+扁穗冰草豆禾比为1:3,1:1,3:1(L25G75,L50G50,L75G25)],分析研究不同混播模式对牧草产量和营养价值的影响。结果表明:6种牧草混播模式下各牧草株高、密度、干物质产量均显著低于3种豆科牧草混播模式和3种禾本科牧草混播模式(P<0.05),且牧草粗蛋白含量和相对饲喂价值均显著低于3种豆科牧草混播模式(P<0.05),但高于3种禾本科牧草混播模式(P<0.05);在6种牧草混播模式中混播比例为1:1时更有利于混播草地牧草干物质总量积累。
关键词: 混播模式, 牧草产量, 营养价值, 豆科牧草, 禾本科牧草
Abstract: To explore the effects of different mixed sowing patterns on forage yield and nutritional value, 11 mixed sowing patterns were studied in this experiment by controlling the mixed sowing proportion and the mixed forage species, namely, 4 mixed sowing patterns of legume forage:mixed sowing ratios of Medicago varia + Onobrychis viciaefolia +Lotus corniculatus were 1:1:1, 1:1:2, 1:2:1, 2:1:1 (Z1H1B1, Z1H1B2, Z1H2B1, Z2H1B1), 4 mixed sowing patterns of gramineous forage:mixed sowing ratios of Elymus dahuricus + Bromus inermis + Agropyron cristatum were 1:1:1, 1:1:2, 1:2:1, 2:1:1 (W1P1B1, W1P1B2, W1P2B1, W2P1B1), and 3 mixed sowing patterns of legume and gramineous:mixed sowing ratios of Medicago varia + Onobrychis viciaefolia +Lotus corniculatus + Elymus dahuricus + Bromus inermis + Agropyron cristatum were 1:3, 1:1, 3:1 (L25G75, L50G50, L75G25). The results showed that the plant height, density and dry matter yield of the six forage mixed sowing patterns were lower than those of the three leguminous forage mixed sowing patterns and the three gramineous forage mixed sowing patterns(P<0.05), but the crude protein content and relative feeding value of the forage were lower than those of the three leguminous forage mixed sowing patterns(P<0.05), and higher than those of the three gramineous forage mixed sowing patterns(P<0.05). The results showed that 1:1 mixed sowing ratio was more conducive to the accumulation of total dry matter in six mixed sowing patterns.
Key words: Mixed sowing patterns, Forage yield, Nutritive value, Legume forage, Gramineous forage
中图分类号:
S812.4
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