| 甜高梁在青海高原种植的初步研究 |
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| 引用本文： | 李春喜,董喜存,李文建,张怀刚,陈志国.甜高梁在青海高原种植的初步研究[J].草业科学,2010,27(9):75-81. |
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| 作者姓名： | 李春喜 董喜存 李文建 张怀刚 陈志国 |
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| 作者单位： | 中国科学院西北高原生物研究所中国科学院高原生物适应与进化重点实验室,青海西宁,810001;中国科学院近代物理研究所,甘肃兰州,730000 |
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| 基金项目： | 中国科学院西北高原生物研究所知识创新工程领域前沿项目，中国科学院西部之光项目，中国科学院方向性重点项目，中国科学院西部行动项目 |
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| 摘 要： | 为探讨甜高粱(Sorghum bicolor)在青海作为饲料作物种植的可能性，在青海高原上做了初步试验，结果显示：密度对茎秆高度、茎粗、产量有显著影响，对生育期、单株质量影响不显著，株行距为0.40 m×0.20 m时，产量最高；浇水次数对甜高粱的生育期、茎秆高度、茎粗、单株质量、产量没有显著影响，表明甜高粱对水分依赖不高，具有很强的耐旱和抗旱性；地膜对甜高粱有极显著影响，使其生育期提前，茎秆高度增高，单株质量增加、产量提高；糖分含量在开花－收获期为15.93%～16.67%，比不盖地膜增加了29.19%～47.98%；大田示范密度0.50 m×0.20 m，开花－收获期666.7 m2产量达4 890.8 kg，投入产出比为1∶1.78，效益显著。研究表明，在青海高原东部农业区盖地膜种植饲用甜高粱，用作饲料是完全可行的。
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| 关 键 词： | 甜高梁 饲料作物 地膜 含糖量 |
Preliminary study on sweet sorghum growing on Qinghai Plateau |
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| LI Chun-xi,DONG Xi-cun,LI Wen-jian,ZHANG Huai-gang,CHEN Zhi-guo.Preliminary study on sweet sorghum growing on Qinghai Plateau[J].Pratacultural Science,2010,27(9):75-81. |
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| Authors: | LI Chun-xi DONG Xi-cun LI Wen-jian ZHANG Huai-gang CHEN Zhi-guo |
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| Abstract: | Sweet sorghum (Sorghum bicolor) was growed on Qinghai Plateau and the preliminary results indicated that the plant density showed a significant effect on plant height, stalk diameter and unit yield, but its effect on growth period and single plant yield were not significant. The highest yield was 101 448 kg/hm2 when plant density was 120 000 plants/hm2. The irrigation times did not significantly affect the growth period, plant height, stalk diameter, single plant yield and unit yield, which suggested that sweet sorghum had strong drought tolerance and drought resistance. Plastic film mulching showed significant positive effect on growth period, plant height and unit yield. The sugar content under plastic film mulching was 15.93% to 16.67% and increased by 29.19% to 47.98% compared with control. In field demonstration trial, the yield was 73 362 kg/hm2 (density was 90 000 plants/hm2) and the ratio of input and output was 1∶1.78. It could be concluded that sweet sorghum was satisfied as forage and silage in the research area. |
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| Keywords: | sweet sorghum forage crop plastic film sugar content |
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