外源添加磷石膏对堆肥碳组分及腐殖质品质的影响

刘媛媛; 徐智; 陈卓君; 汤利

文章摘要

刘媛媛,徐智,陈卓君,汤利.外源添加磷石膏对堆肥碳组分及腐殖质品质的影响[J].农业环境科学学报,2018,37(11):2483-2490.

外源添加磷石膏对堆肥碳组分及腐殖质品质的影响

Effects of phosphogypsum addition on carbon fractions and humus quality during composting

投稿时间：2018-03-21 修订日期：2018-05-17

DOI：10.11654/jaes.2018-0377

中文关键词: 磷石膏堆肥碳组分腐殖化进程腐殖质品质

英文关键词: phosphogypsum composting carbon fractions humification humus quality

基金项目:国家重点研发计划项目（2017YFD0800202）

作者	单位	E-mail
刘媛媛	云南农业大学资源与环境学院, 昆明 650201
徐智	云南农业大学资源与环境学院, 昆明 650201
陈卓君	云南农业大学资源与环境学院, 昆明 650201
汤利	云南农业大学资源与环境学院, 昆明 650201	ltang@ynau.edu.cn

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中文摘要:

为探究磷石膏的高效资源化利用方式，本文以鸡粪和玉米秸秆为原料，按照有机物料质量（以干物质计），添加磷石膏0%（对照）、磷石膏10%（PG10%）和磷石膏20%（PG20%）3个处理，研究外源添加磷石膏对堆肥碳组分及腐殖质品质的影响。结果表明：至堆肥结束时，CK、PG10%和PG20%处理均可腐熟，均可达到堆肥无害化标准。PG10%处理可延长堆肥高温持续时间（2 d）。与对照相比，PG10%和PG20%处理均显著降低了堆肥总有机碳、水溶性有机碳、腐殖质碳含量、胡敏酸碳含量和富里酸碳含量。PG10%处理的堆肥总有机碳、水溶性有机碳、腐殖质碳含量、胡敏酸碳含量和富里酸碳含量均显著高于PG20%处理，增幅分别为4.50%、51.79%、14.52%、16.99%和8.22%。与对照相比，PG10%处理的堆肥腐殖化指数、腐殖化率、胡敏酸百分含量和胡富比分别增加了3.44%、1.08%、2.36%和8.70%。因此，适量磷石膏添加（10%）可促进堆肥腐殖化进程，提高腐殖质品质。

英文摘要:

This aim of this research was to study the efficient utilization of phosphogypsum and to investigate the effects of phosphogypsum addition on carbon fractions and humus quality during chicken manure and corn stalk composting. The chicken manure was mixed with corn stalk and further amended with phosphogypsum at 0% (CK), 10% (PG10%), and 20% (PG20%)in dry weight of organic materials before being composted for 24 days. Results showed that the CK, PG10%, and PG20% treatments resulted in mature compost, which meets the compost sanitation requirements. PG10% extended the high-temperature processing times by 2 days. Compared to CK, both the treatments of PG10% and PG20% significantly reduced the total organic carbon (TOC), water-soluble organic carbon (WSOC), humus carbon (HSC), humic acid carbon (HA-C), and fulvic acid carbon (FA-C)contents. PG10% increased TOC, WOSC, HS-C, HA-C, and FA-C significantly by 4.50%, 51.79%, 14.52%, 16.99%, and 8.22%, respectively, when compared to those with PG20%. Compared to CK, PG10% increased the humification index (HI), humification ratio (HR), percentage of humic acid (PHA), and degree of polymerization (DP)by 3.44%, 1.08%, 2.36% and 8.70%, respectively. In conclusion, phosphogypsum (10%)could enhance the humification process and improve the humus quality.

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