不同氮源添加对糖渣堆肥处理牡蛎壳的影响  

Effects of Different Nitrogen Sources on The Treatment of Oyster Shells by Composting with Corn Starch Cake

作　　者：王德瑞 吴佳俐 张洪霞 宋宛霖 汪辉[4] 冯大伟[1] WANG Derui;WU Jiali;ZHANG Hongxia(Yantai Institute of Coastal Zone Research,Chinese Academy of Sciences,Yantai 264003;College of Resources and Environmental Sciences,China Agricultural University,Beijing 100193;College of Life Sciences,Yantai University,Yantai 264003,China)

机构地区：[1]中国科学院烟台海岸带研究所,山东烟台264003 [2]中国农业大学资源与环境学院,北京100193 [3]烟台大学生命科学学院,山东烟台264003 [4]中国科学院青岛生物能源与过程研究所,山东青岛266101

出　　处：《浙江海洋大学学报（自然科学版）》2024年第1期71-78,共8页Journal of Zhejiang Ocean University：Natural Science

基　　金：烟台市科技计划项目(2022XCZX098);2020年山东省泰山产业领军人才高效生态农业创新项目(TSCY20200124);日照市重点研发计划(2021ZDYF010122)。

摘　　要：为研究堆肥处理牡蛎壳的效果,探究不同氮源对糖渣堆肥处理牡蛎壳过程和堆肥产品腐熟度的影响,本研究以牡蛎壳粉和糖渣为原料,豆粕和尿素为不同氮源,设置CK(糖渣+豆粕)、DP(糖渣+豆粕+牡蛎壳)和NS(糖渣+尿素+牡蛎壳)3个处理组,开展了为期35 d的发酵试验。结果表明,添加牡蛎壳的处理在堆肥过程中,温度略低于CK组,但两处理的最高温度均高于60℃,pH在6.79~7.94之间,EC值<4 mS·cm^(-1),说明添加牡蛎壳不会对堆肥的理化性质产生负面影响。堆肥结束时,DP处理组的GI最高为104%;且与CK组相比,总腐殖酸含量增加了17.64%,氨气累计排放量降低了34.55%,有效态钙含量增加了37.39%,说明以豆粕为氮源进行堆肥处理牡蛎壳,有利于堆肥的腐熟,促进氮保留并增加有效态钙含量,提高堆肥产品的质量。本研究结果可为堆肥处理牡蛎壳工艺参数提供有利参考。In order to investigate the effect of composting treatment on oyster shells and explore the impact of various nitrogen sources on the composting process of corn starch cake and the degree of compost maturity in treating oyster shells,this study utilized oyster shell powder and corn starch cake as raw materials,soybean meal and urea as different nitrogen sources.Three treatment groups were established:CK(corn starch cake+soybean meal),DP(corn starch cake+soybean meal+oyster shell)and NS(corn starch cake+urea+oyster shell).A 35-day fermentation experiment was conducted in order to evaluate the effects.The results showed that the addition of oyster shell in the composting process resulted in slightly lower temperatures compared to the CK group,but the highest temperatures in both treatments were above 60℃.The pH values ranged from 6.79 to 7.94,and the electrical conductivity(EC)was less than 4 mS·cm^(-1),indicating that the addition of oyster shell did not have a negative impact on the physicochemical properties of composting.At the end of composting,the maximum GI in the DP treatment group was 104%;compared with the CK group,the total humic acid content increased by 17.64%,the cumulative ammonia emissions decreased by 34.55%,and the effective calcium content increased by 37.39%.In summary,the results showed that composting oyster shells with soybean meal as nitrogen source was beneficial to composting promotes nitrogen retention,increases the content of available calcium,and improves the quality of compost products.The results of this study can provide favorable reference for the process parameters of treating oyster shells through composting.

关 键 词：牡蛎壳 糖渣 堆肥 不同氮源 

分 类 号：X705[环境科学与工程—环境工程]