水保所知识产出(1956---)知识库

为了选出适宜在半干旱区种植的饲用植物，选取饲用玉米 (Zea mays)、饲用高粱 (Sorghum bicolor) 和苏丹
草 (Sorghum sudanense) 3 种饲用作物和紫花苜蓿 (Medicago sativa)、老芒麦 (Elymus sibiricus) 2 种牧草为研究对象，在
无灌溉和施肥的管理条件下，比较分析其干物质产量、营养品质及饲用价值。结果表明，高粱 (引自日本) 的株高最
高 (289.25 cm)，比甜高粱和玉米高约 10%，苏丹草 SP20(引自美国) 株高最低 (172.80 cm)；甜高粱干物质产量最高
(17.38 kg·m –2 )，其次为高粱 (12.35 kg·m –2 )，均显著高于玉米 (P < 0.05)。苏丹草中性洗涤纤维 (NDF) 和酸性洗涤纤维
(ADF) 含量相对较低，甜高粱与饲用玉米 NDF 和 ADF 含量差异不显著 (P > 0.05)。苏丹草和紫花苜蓿相对饲用价值
(RFV) 值较高 (135～143)，其次是饲用玉米和甜高粱 (107～109)，高粱和老芒麦最低 (95～102)。综合分析结果表明，
在半干旱地区种植甜高粱具有与饲用玉米同等的饲用价值，但甜高粱具有更高的产量，因此在半干旱区种植甜高粱
具有一定的发展潜力。

In order to select suitable forage plants for semi-arid regions, three typical forage crops, including forage corn
(Zea mays),  forage  sorghum  (Sorghum bicolor)  and  sudangrass  (Sorghum sudanense),  and  two  forage  grasses  alfalfa
(Medicago sativa) and siberian wildrye (Elymus sibiricus), were selected to compare and analyze their dry matter yield,
nutritional quality and forage value. The results showed that the plant height of sorghum (from Japan) was the highest
(289.25 cm), which was approximately 10% higher than that of sweet sorghum and maize. The plant height of sudangrass
SP20 (from America) was the lowest (172.80 cm). The dry matter yield of sweet sorghum was the highest (17.38 kg·m
–2 ),
followed by sorghum (12.35 kg·m
–2 ), both of which were higher than that of maize (P < 0.05). The content of neutral
detergent fiber (NDF) and acid detergent fiber (ADF) in sudangrass was relatively low, and the difference between sweet
sorghum and forage maize was not significant (P > 0.05). The relative feed values (RFV) of sudangrass and alfalfa werehighest (135～143), followed by forage maize and sweet sorghum (107～109), and sorghum and siberian wildrye were the
lowest (95～102). It was concluded that sweet sorghum had similar forage value to forage maize, but had a higher yield,
which has greater development potential in semi-arid areas.