| 施用不同形态氮素对高寒草甸草场生物量的影响 |
| |
| 引用本文： | 德科加.施用不同形态氮素对高寒草甸草场生物量的影响[J].青海畜牧兽医杂志,2010,40(4):1-3. |
| |
| 作者姓名： | 德科加 |
| |
| 作者单位： | 青海省畜牧兽医科学院,西宁,810016 |
| |
| 基金项目： | 青海大学中青年科研基金，国际植物营养研究所(IPNI)国际合作项目，现代农业产业技术体系建设专项资金 |
| |
| 摘 要： | 施用两种不同形态的氮素以研究其对高寒草甸天然草场生物量的影响,结果表明,以NH4＋-N作为单一施用氮源的处理,地上生物量鲜重达6 080kg/hm^2,地上生物量干重达2 716kg/hm^2,地下生物量干重达84 312.23kg/hm^2,比单一施用NO3-N的处理分别增产147.15%,115.56%和52.87%。在施用氮素总量中NH4＋-N比例的减少和NO3-N比例的增加的情况下,高寒草甸草场地上生物量和地下生物量变化呈下降趋势,提示施用无机氮肥不同形态牧草增产表现以铵态氮最佳,硝态氮最差。
|
| 关 键 词： | 高寒草甸 铵态氮 硝态氮 地上生物量 地下生物量 |
Effect of Dressing Different Type of Nitrogen on Biomass on Alpine Meadow Pasture |
| |
| DE Ke-jia.Effect of Dressing Different Type of Nitrogen on Biomass on Alpine Meadow Pasture[J].Chinese Qinghai Journal of Animal and Veterinary Sciences,2010,40(4):1-3. |
| |
| Authors: | DE Ke-jia |
| |
| Institution: | DE Ke-jia (Qinghai Academy of Animal and Veterinary Scineces,Xining,810016) |
| |
| Abstract: | Applying two kinds of different type Nitrogen on Alpine meadow pasture for studying its effect on biomass.The results showed that aboveground biomass fresh weight reach 6 080kg/hm^2,aboveground biomass dry weight reach 2 716kg/hm^2,underground biomass dry weight reach 84 312.23kg/hm^2 under NH＋4-N as single nitrogen resource.Comparing with NO-3-N treatment as single applying,increasing by 147.15%,115.56% and 52.87% respectively.Chang of aboveground biomass and underground biomass on Alpine meadow tend to decreasing under proportion of decreasing NH＋4-N and increasing NO-3-N.Applying Non-organic Nitrogen fertilizre,gaining yield of different type of forage showed that NH＋4-N is optimum and NO-3-N is least optimum. |
| |
| Keywords: | Alpine meadow pasture NH＋4-N NO-3-N Aboveground biomass Underground biomass |
| 本文献已被 维普 万方数据 等数据库收录！ |
|
