摘要
通过田间定位试验,以水稻单作为对照,研究稻虾共作模式对土壤有机碳的影响,采用Pearson(皮尔逊)相关性分析法,探讨稻虾田中土壤有机碳与土壤肥力、土壤酶活力的关系。结果表明:稻虾共作显著(P<0. 05)增加了土壤有机质含量,但低C/N饲料投喂组的土壤有机碳含量显著(P <0. 05)下降。稻虾共作条件下,土壤全磷、脲酶与有机碳呈显著(P <0. 05)正相关,土壤有机质、纤维素酶与有机碳分别呈极显著(P <0. 01)和显著(P <0. 05)负相关。土壤铵氮与有机质呈显著(P <0. 05)负相关,土壤纤维素酶与有机质呈显著(P <0. 05)正相关。
A field experiment on rice-crayfish coculture was conducted to assess the influence on soil organic carbon in paddy field with regular rice monoculture as control.Pearson correlation analysis was introduced to explore the relationships within organic carbon,soil fertility and soil enzyme activities.It was shown that rice-crayfish coculture significantly(P<0.05)increased the contents of soil organic matter,but the soil organic carbon contents were significantly(P<0.05)decreased in rice-crayfish coculture with low C/N diet.Under rice-crayfish coculture,soil total phosphorus,soil urease showed significant(P<0.05)positive correlation with soil organic carbon,yet soil cellulose and soil organic matter showed significant negative correlation with soil organic carbon at P<0.01 and P<0.05,respectively.Soil ammonia nitrogen was significantly(P<0.05)negatively correlated with soil organic matter,yet soil cellulose was significantly(P<0.05)positively correlated with soil organic matter.
作者
管勤壮
成永旭
李聪
王海峰
陈焕根
李嘉尧
GUAN Qinzhuang;CHENG Yongxu;LI Cong;WANG Haifeng;CHEN Huangen;LI Jiayao(National Demonstration Center for Experiment Fisheries Science Education,College of Fisheries and Life,Shanghai Ocean University,Shanghai 201306,China;Center for Research on Environment Ecology and Fish Nutrition(CREEFN)of the Ministry of Agriculture and Rural Affairs,College of Fisheries and Life,Shanghai Ocean University,Shanghai 201306,China;Shanghai Collaborative Innovation for Aquatic Animal Genetics and Breeding,College of Fisheries and Life,Shanghai Ocean University,Shanghai 201306,China;Fisheries Technology Extension Center of Jiangsu Province,Nanjing 210036,China)
出处
《浙江农业学报》
CSCD
北大核心
2019年第1期113-120,共8页
Acta Agriculturae Zhejiangensis
基金
上海市科委农业领域科技支撑项目(15391912100)
江苏省渔业科技类项目(D2017-1-1)
上海高校水产学高峰学科建设(2015-62-0908)
关键词
稻虾共作
有机碳
土壤酶活力
rice-crayfish coculture
organic carbon
soil enzyme activity
