| 朱继荣1,2 ，孙崇玉2 ，于红梅1，束良佐2，刘瑞2，章丽萍2.生物炭对土壤肥力与环境的影响[J].广东农业科学,2014,41(3):65-69 |
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生物炭对土壤肥力与环境的影响 |
| Effect of citrus intercropping with other crops onthe nutrient status of rhizospheric soils |
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| DOI： |
| 中文关键词: 生物炭 土壤环境 土壤结构 土壤肥力 |
| 英文关键词: citrus crops intercropping rhizospheric soil available nutrient |
| 基金项目:国家自然科学基金（31071868）；教育部高校留学
回国人员科研项目 |
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| 中文摘要: |
| 生物炭是生物体在完全或部分缺氧环境中经高温裂解后形成的含碳率较高的产物。目前对生物炭的研
究仍属于起步阶段，不同学科领域采用不同研究方法和手段，研究结论也不尽一致。阐述了目前生物炭对土壤结构、
土壤污染、土壤碳氮转化过程以及生物炭施用对土壤微生物群落、酶活性等方面的国内外研究进展，并且提出目前
生物炭在改土培肥研究过程中存在的问题，以期为今后生物炭的研究工作提供理论指导。 |
| 英文摘要: |
| Effects of citrus/peanut, citrus/ginger intercropping, systems and peanut, citrus, ginger monocropping
systems on the nutrients status of rhizospheric soils were investigated comparatively in Xinhui reclaimed wetlands,
Guangdong province. Results showed that (1) The pH value of rhizospheric soil varied greatly in the five farming systems
after 7 months cultivation. The pHs of rhizospheric soils in citrus/peanut and citrus/ginger farming systems were
significantly lower than those under the peanut, citrus and ginger monocropping system. Especially, the pH of rhizospheric
soil of citrus/peanut farming system was the lowest among the five kinds of planting systems; (2)The contents of available
nitrogen in rhizospheric soil of citrus/peanut and citrus/ginger intercropping system were significantly higher than those of
peanut and ginger monocropping system. No significant difference was found between the citrus/peanut and citrus/ginger
intercropping systems. Also, the available nitrogen contents in the five farming systems all improved significantly after 7-
month plantation;(3) The available phosphorus content of rhizospheric soil in citrus monocropping was significantly higher
than that in citrus/peanut, citrus//ginger intercropping,
and peanut monocropping systems. Meanwhile, The
available phosphorus contents of rhizospheric soil in
citrus/peanut and citrus/ginger interplanting systems did
not show any significant differences from those in the
peanut and ginger monocropping systems. (4) After 7-
month planting, the available potassium content of
rhizospheric soil in citrus/ginger farming system was
significantly higher than that in the citrus monocropping systems; available potassium content in citrus/peanut intercropping was similar to that in citrus/ginger interplanting, and
was significantly improved in 7 months.(5) The organic matter contents of rhizospheric soils in the five farming systems
were very close and no obvious change with time in this study. It would be concluded that citrus/ginger and citrus/peanut
intercropping systems could improve some nutrients status of rhizospheric soils. So citrus/ginger and citrus/peanut
intercropping systems may be good examples for orchard land use in the study area. |
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