施肥对土壤不同碳形态及碳库管理指数的影响
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* 国家自然科学基金项目(批准号:49671043)


EFFECTS OF FERTILIZATION ON DIFFERENT CARBON FRACTIONS AND CARBON POOL MANAGEMENT INDEX IN SOILS
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    摘要:

    分析了施肥对土壤活性碳(CA)、微生物生物量碳(CMB)、矿化碳(CM)及碳库管理指数(CPMI)的影响。结果表明,不同土壤CACMBCM及CPMI的大小为:水稻土>黄棕壤>红壤>潮土。施肥对CA和CPMI,CMBCM的影响分别为:处理3>处理5>处理1>处理4>CK,处理3>处理5>处理4>处理1>CK。在提高CACMBCM及CPMI方面,稻草肥、绿肥优于厩肥,厩肥高量施用优于常量施用。施肥10年与5年相比,潮土中CPMI处理7和9上升,处理8和CK下降。相关分析表明:CPMI与土壤养分因子相关或极相关,反映了农业生产措施对土壤碳库的影响,可以运用CPMI来评估土壤碳库的变化。

    Abstract:

    Effect of fertilization on active C (CA), microbial biomass C(CMB),mineralizable C (CM) and C pool management index (CPMI) in different soils were examined. Results indicated that among those studied soils, soil CA, CMB,CM and CPMI were the highest in paddy soil, the second in yellow brown soil, the third in red soil and the lowest in Cao soil. Effects of different treatments on CA, CPMI, CMB and CM were organic manure>organic manure+NPK>reference>NPK>CK, organic manure>organic manure+NPK>NPK>reference>CK respectively. In raising CA,CMB,CM and CPMI, effects of different organic fertilizer types and application were rice straw, green manure better than farmyard manure, high application better than conventional application. Compared 5-y fertilization with 10-y fertilization, CPMI in Cao soil under organic fertilizer and organic fertilizer+NPK treatments increased, while CPMI decreased under NPK and CK treatment Correlation analysis showed: CPMI was well related to total C, total N, microbial biomass C and N, available N,P and K in these soils and sensitive to agricultural measures, which indicated that it is practical to assess soil C pools under different management practices using CPMI.

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沈宏,曹志洪,徐志红.施肥对土壤不同碳形态及碳库管理指数的影响[J].土壤学报,2000,37(2):166-173. DOI:10.11766/trxb199810030203 Shen Hong, Cao Zhi-hong, Xu Zhi-hong. EFFECTS OF FERTILIZATION ON DIFFERENT CARBON FRACTIONS AND CARBON POOL MANAGEMENT INDEX IN SOILS[J]. Acta Pedologica Sinica,2000,37(2):166-173.

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  • 收稿日期:1998-10-03
  • 最后修改日期:1999-04-12
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  • 在线发布日期: 2013-02-25
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