|
| 猪粪有机肥施用对潮土速效养分含量及团聚体分布的影响 |
| Effects of Pig Manure Organic Fertilizer Application on Available Nutrient Content and Soil Aggregate Distribution in Fluvo-aquic Soil |
| 投稿时间：2017-03-11 |
| DOI：10.13254/j.jare.2017.0070 |
| 中文关键词: 猪粪，有机肥，土壤速效养分，土壤团聚体 |
| 英文关键词: pig manure, organic fertilizer, available nutrient, soil aggregate |
| 基金项目:河南省重点科技攻关计划项目（132102110039，152102110050）；国家"十三五"重点研发计划项目（2016YFD0300803-03）；中科院STS计划项目（KFJ-EW-STS-055-1） |
|
| 摘要点击次数: 3397 |
| 全文下载次数: 2563 |
| 中文摘要: |
| 针对集约化养殖畜禽粪便无序排放产生的环境问题，采用连续2年的盆栽试验，以猪粪有机肥为研究对象，设计5个有机肥施用水平（0、6.7、13.3、26.7、40.0 g·kg-1土），研究了猪粪有机肥施用对潮土有机碳、速效养分含量及土壤团聚体分布的影响，为畜禽粪便田间消纳和合理施用提供理论依据。研究结果表明，土壤中有机碳、碱解氮、速效磷和速效钾含量均随有机肥施用量的增加而呈现逐渐升高趋势，且第二年土壤中各指标增加更加明显，第二年施肥处理各速效养分含量分别比第一年高2.7%~54.0%、6.7%~34.6%、36.8%~159.5%、20.3%~35.7%；土壤有机碳含量与外源有机碳投入量之间存在着显著的线性关系，有机肥施用可以显著提高生菜产量，且具有明显的后效作用。2年试验中，土壤团聚体以0.053~0.25 mm和<0.053 mm小团聚体所占比例较大，且随有机肥施用量增加呈现降低趋势，而0.25~0.5 mm和>0.5 mm大团聚体含量却随有机肥施用量增加呈升高趋势，可见，施用有机肥可促进大团聚体的形成，在有机肥施加量为40.0 g·kg-1土时，土壤中>0.25 mm团聚体的含量最高，土壤团聚体平均重量直径（MWD）和几何平均直径（GWD）最大，土壤的团聚化作用最强，土壤结构最稳定。 |
| 英文摘要: |
| This paper focuses on environmental risk caused by livestock manure disorderly discharged from integrated livestock and poultry industry. 2-year pot experiment was carried out to study the effects of pig manure organic fertilizer on fluvo-aquic soil organic carbon, available nutrient content and soil aggregate distribution, which designed in 5 levels of organic fertilizer application(0, 6.7, 13.3, 26.7, 40.0 g·kg-1 soil). The results showed that the organic carbon, alkali-hydrolyzable nitrogen, available P and available K contents in soil were enhanced with organic fertilizer application increasing, and the indicators of soil were increased significantly in second year, such as organic carbon content was 2.7%~54.0% higher than that of the first year, alkali-hydrolyzable nitrogen content was higher 6.7%~34.6%, available P content was higher 36.8%~159.5% and available K content was higher 20.3%~35.7%. There was a significant linear relationship between soil organic carbon content and external organic carbon input. Organic fertilizer application could significantly improve lettuce yield, and it had a significant effect. The soil micro-aggregate contents for 0.053~0.25 mm and <0.053 mm took a larger percentage of total soil aggregates, and showed a decreasing trend with organic fertilizer application increasing, while the contents of 0.25~0.5 mm and >0.5 mm soil macro-aggregates were increased with organic fertilizer application increasing. Organic fertilizer application could promote soil macro-aggregates formation, when the pig manure organic fertilizer applied 40.0 g·kg-1 soil, the contents of >0.25 mm soil aggregates reached maximum, and also the mean weight diameter(MWD) and geometric average diameter(GWD) of soil aggregates were higher than that of other treatments, the soil agglomeration became more stronger and the soil structure became more stable. |
| HTML
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
