| 苏丹草-黑麦草轮作制中施肥对饲草产量及养分吸收的影响 |
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| 引用本文： | 李文西,鲁剑巍,杨娟.苏丹草-黑麦草轮作制中施肥对饲草产量及养分吸收的影响[J].草业学报,2009,18(3):165-170. |
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| 作者姓名： | 李文西 鲁剑巍 杨娟 |
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| 作者单位： | 华中农业大学资源与环境学院, 湖北 武汉 430070 |
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| 基金项目： | 国际植物营养研究所(IPNI)国际合作项目 |
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| 摘 要： | 连续2个轮作周期利用盆栽试验研究了苏丹草-黑麦草轮作制度下不同施肥措施对饲草产量及养分吸收的影响。结果表明,氮磷钾肥配合施用(NPK)显著提高了苏丹草、黑麦草产量,2005/2006年度2季饲草鲜产总量为1 690.0 g/盆,分别比不施氮(PK)、不施磷(NK)、不施钾(NP)处理增产700.7%,426.4%和15.9%;2006/2007年度,2季饲草鲜产总量为2 091.3 g/盆,分别比不施氮、不施磷、不施钾处理增产1 256.9%,384.5%和4.4%。氮磷钾肥配施明显促进饲草的养分吸收,2005/2006年度与2006/2007年度饲草氮(N)、磷(P2O5)、钾(K2O)总吸收量分别为6.36,1.83,13.91 g/盆和4.91,2.31,7.64 g/盆,均显著高于其他处理。轮作体系中,NPK处理的氮、磷、钾肥利用率2个年度分别为59.4%,33.9%,96.0%和47.4%,39.8%,43.1%,肥料累积利用率分别达53.4%,36.8%和69.5%。
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| 关 键 词： | 苏丹草-黑麦草轮作 氮磷钾肥 养分吸收 肥料利用率 |
| 收稿时间： | 1900-01-01; |
Effect of fertilization on the grass yield,water utilizing and nutrition uptake of Sudangrass and Ryegrass rotation regime |
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| LI Wen-xi,LU Jian-wei,YANG Juan.Effect of fertilization on the grass yield,water utilizing and nutrition uptake of Sudangrass and Ryegrass rotation regime[J].Acta Prataculturae Sinica,2009,18(3):165-170. |
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| Authors: | LI Wen-xi LU Jian-wei YANG Juan |
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| Institution: | College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China |
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| Abstract: | The effect of different fertilization strategies on the grass yield,water utilizing and nutrition uptake of a Sudangrass and Ryegrass rotation regime was studied in a two-year pot experiment.Application of NPK combinations improved the yield of Sudangrass and Ryegrass,and total yield for the two seasons of 2005 and 2006 was 1 690.0 g/pot,which was 700.7%,426.4%,and 15.9% higher than that of the PK,NK,NP treatments respectively.In 2006 and 2007,total yield of the two seasons was 2 091.3 g/pot,which was 1 260... |
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| Keywords: | Sudangrass and Ryegrass rotation NPK fertilizer nutrition uptake fertilizer utilizing efficiency |
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