PAN Ruirui,LIU Ye,JIANG Jiezeng,et al.Effect of the Duration of Submerged Cultivation on the Soil Salinity and Nutrients[J].Northern Horticulture,2015,39(21):178-182.[doi:10.11937/bfyy.201521046]
淹水栽培时间对土壤盐分及养分的影响
- Title:
- Effect of the Duration of Submerged Cultivation on the Soil Salinity and Nutrients
- Keywords:
- water logging time; salinization; soil salinity; soil nutrients
- 文献标志码:
- A
- 摘要:
- 以豆瓣菜（Nasturtium officinale R.Br.）为试验材料，以土壤为研究对象，在封底栽培桶中淹水栽培豆瓣菜，以研究淹水栽培时间对设施土壤盐分和养分的影响。在豆瓣菜的4个采收期，以10 cm为单位分4层分别取土，测定0~40 cm各土层的土壤EC值、NO3--N、速效P、速效K及有机质含量。结果表明：随淹水时间延长，0~20 cm土层土壤EC值、NO3--N、速效P及速效K含量均有所下降，且土壤EC值、NO3--N含量降幅明显；而20~40 cm土层NO3--N、速效P及速效K含量先上升后下降，且变幅均较小。0~10、20~30 cm土层土壤有机质含量随淹水时间延长先大幅下降后小幅上升，而10~20、30~40 cm土层有机质含量随淹水时间逐渐下降。说明长时间淹水栽培能够降低设施土壤盐分及速效养分含量，增加土壤表层（0~10 cm）及主要根系吸收层（20~30 cm）的有机质含量，对于改善高盐分含量和养分富集的设施土壤具有重要作用。
- Abstract:
- Taking Nasturtium officinale R.Br.as the test material,soil as the object,watercress was planted in waterproof buckets with a submerged cultivation way,the effect of the duration of submerged cultivation on the soil salinity and nutrients was studied.The watercress was harvested 4 times during the experiment and the soil samples were collected at each havest.Soil was sampled 0-40 cm underground，with each 10 cm as a unit，the soil EC value，and the content of nitrate nitrogen，available phosphorus，available potassium and organic matter were determined.The results showed that the soil EC value，and the content of nitrate nitrogen，available phosphorus and available potassium content in 0-20 cm soil layer decreased with the extension of water logging time，among which the decline degree of soil EC value and nitrate nitrogen content was significant.While the content of nitrate nitrogen，available phosphorus and available potassium content in 20-40 cm soil layer increased and then decreased，and the amplitude were smaller.With the extension of water logging time，soil organic matter content in 0-10 cm and 20-30 cm soil layer decreased significantly and then increased slightly while decreased in 10-20 cm and 30-40 cm soil layers.The experiment concluded that long water logging time could reduce soil salinity and available nutrient，and increase organic matter content in surface soil (0-10 cm) and the main absorption layer of root system (20-30 cm)，which would play an important role in improving facility soil of high salt content and nutrient enrichment.
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备注/Memo
第一作者简介：潘瑞瑞(1988-),女,安徽淮南人,硕士研究生,现主要从事水旱轮作等研究工作。E-mail：919887899@qq.om.责任作者：江解增(1964-),男,江苏无锡人,教授,博士生导师,现主要从事水生蔬菜等研究工作。E-mail：jzjiang@yzu.edu.cn.基金项目：国家科技计划资助项目（2012BAD27B00）；江苏省农业三新工程资助项目(SXGC(2014)314)。