GAO Chao,CHEN Ji-shan,DI Gui-li,et al.Effect of Fertilization on Population Characteristics and Biomass of Leymus chinensis in Degraded Grassland[J].HEILONGJIANG AGRICULTURAL SCIENCES,2016,(01):135-135.[doi:10.11942/j.issn1002-2767.2016.01.0135]
施肥对退化草地羊草种群特征和生物量的影响
- Title:
- Effect of Fertilization on Population Characteristics and Biomass of Leymus chinensis in Degraded Grassland
- 文章编号:
- 1002-2767（2016）01-0135-03
- Keywords:
- fertilization; degraded grassland; population characteristics; biomass
- 分类号:
- S543.062
- 文献标志码:
- A
- 摘要:
- 为了提高退化羊草草地的生产力，恢复草地生态系统，通过设置3个不同施肥水平（N1施肥 30 kg?hm-2，N2施肥60 kg?hm-2，N3施肥90 kg?hm-2），对退化草地羊草种群特征和生物量的变化进行研究。结果表明：施肥可显著增加羊草种群的高度、密度、盖度和重要值；退化草地地上生物量随施肥水平的升高逐渐增加，但是N3处理和N2处理的地上生物量差异不显著；施肥可促进地下总生物量增加，地下各层的地下生物量随着土层加深逐渐降低。
- Abstract:
- The experiment was carried in Leymus chinensis degraded grassland through three fertilization levels (N130 kg?hm-2,N2 60 kg?hm-2,N3 90 kg?hm-2),the effect of fertilization on Leymus chinensis population characteristics and aboveground biomass and belowground biomass were studiel.The results showed that fertilization could increase the height,density,coverage and importance values of Leymus chinensis.The aboveground biomass increased gradually with the increase of fertilization level,but the aboveground biomass of N3 and N2 treatment was not significant different.Fertilization could promote the total biomass of the underground biomass and each layer underground biomass decreased with the depth of the soil layer.
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备注/Memo
收稿日期：2015-11-23
基金项目：黑龙江省农业科技创新工程院级科研资助项目（QN014）
第一作者简介：高超（1979-），女，内蒙古自治区根河市人，硕士，助理研究员，从事牧草栽培和草地改良研究。E-mail:gaochaopdf2000@163.com。