Knowledge Management System of Northwest Institute of Plateau Biology, CAS
Effect of N fertilizer on the productivity and nutritive values of perennial grass mixtures in the alpine region of Qinghai-Tibetan Plateau, China | |
Dong, SK; Yang, ZF; Long, RJ; Hu, ZZ; Kang, MY | |
2005-04-01 | |
发表期刊 | CANADIAN JOURNAL OF PLANT SCIENCE |
卷号 | 85期号:2页码:361-368 |
文章类型 | Article |
摘要 | A study was conducted on grass mixtures that included smooth bromegrass (SB) + drooping wild ryegrass (DW), smooth bromegrass + Siberian wild ryegrass (SW) + crested wheatgrass (CW) and smooth bromegrass + Siberian wild ryegrass + drooping wild ryegrass + crested wheatgrass in the alpine region of Qinghai-Tibetan Plateau. The study was conducted from 1998 to 2000 to investigate the effects of N application rates and growing year on herbage dry matter (DM) yield and nutritive values. Herbage DM production increased linearly with N application rates. The effect of N application on DM yields was greater (P < 0.05) in the 2nd and 3rd production years than in the establishment year. Dry matter yields of SB + SW + CW and SB + SW + DW + CW can reach as high as 15 000 kg ha(-1) at 345 kg ha(-1) N rate in the 3rd growing year. With increased N application rates, crude protein (CP) contents and 48 h in sacco DM degradability of grasses increased (P < 0.05). No effect (P > 0.05) of N application was detected on organic matter (OM) and acid detergent fibre (ADF) concentration. It can be concluded that for increased biomass production in the alpine region of the Qinghai-Tibetan Plateau, a minimum of 345 kg N ha(-1) should be applied to grass stands in three split application of 115 kg N ha(-1), in early June, early July and late July; A study was conducted on grass mixtures that included smooth bromegrass (SB) + drooping wild ryegrass (DW), smooth bromegrass + Siberian wild ryegrass (SW) + crested wheatgrass (CW) and smooth bromegrass + Siberian wild ryegrass + drooping wild ryegrass + crested wheatgrass in the alpine region of Qinghai-Tibetan Plateau. The study was conducted from 1998 to 2000 to investigate the effects of N application rates and growing year on herbage dry matter (DM) yield and nutritive values. Herbage DM production increased linearly with N application rates. The effect of N application on DM yields was greater (P < 0.05) in the 2nd and 3rd production years than in the establishment year. Dry matter yields of SB + SW + CW and SB + SW + DW + CW can reach as high as 15 000 kg ha(-1) at 345 kg ha(-1) N rate in the 3rd growing year. With increased N application rates, crude protein (CP) contents and 48 h in sacco DM degradability of grasses increased (P < 0.05). No effect (P > 0.05) of N application was detected on organic matter (OM) and acid detergent fibre (ADF) concentration. It can be concluded that for increased biomass production in the alpine region of the Qinghai-Tibetan Plateau, a minimum of 345 kg N ha(-1) should be applied to grass stands in three split application of 115 kg N ha(-1), in early June, early July and late July. |
关键词 | Nitrogen Levels Herbage Dry Matter Yield Leaf Shoot Ratio Crude Protein Contents Dry Matter Degradability |
WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
学科领域 | 农业科学 |
关键词[WOS] | DRY-MATTER YIELD ; BROMEGRASS ; NITROGEN ; QUALITY ; TIMOTHY ; DIGESTIBILITY ; PERFORMANCE ; RECOVERY ; RUMEN |
收录类别 | SCI |
语种 | 英语 |
WOS研究方向 | Agriculture ; Plant Sciences |
WOS类目 | Agronomy ; Plant Sciences |
WOS记录号 | WOS:000228942700007 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://210.75.249.4/handle/363003/1373 |
专题 | 中国科学院西北高原生物研究所 |
作者单位 | 1.Beijing Normal Univ, State Key Lab Environm Simulat & Pollut Control, Sch Environm, Beijing 100875, Peoples R China 2.Chinese Acad Sci, NW Plateau Inst Biol, Xining 810001, Peoples R China 3.Gansu Agr Univ, Grassland Sci Coll, Lanzhou 730070, Peoples R China 4.Beijing Normal Univ, Coll Resources Sci, Beijing 100875, Peoples R China |
推荐引用方式 GB/T 7714 | Dong, SK,Yang, ZF,Long, RJ,et al. Effect of N fertilizer on the productivity and nutritive values of perennial grass mixtures in the alpine region of Qinghai-Tibetan Plateau, China[J]. CANADIAN JOURNAL OF PLANT SCIENCE,2005,85(2):361-368. |
APA | Dong, SK,Yang, ZF,Long, RJ,Hu, ZZ,&Kang, MY.(2005).Effect of N fertilizer on the productivity and nutritive values of perennial grass mixtures in the alpine region of Qinghai-Tibetan Plateau, China.CANADIAN JOURNAL OF PLANT SCIENCE,85(2),361-368. |
MLA | Dong, SK,et al."Effect of N fertilizer on the productivity and nutritive values of perennial grass mixtures in the alpine region of Qinghai-Tibetan Plateau, China".CANADIAN JOURNAL OF PLANT SCIENCE 85.2(2005):361-368. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论