长期施用有机肥对潮土区甘薯碳氮积累与分配的影响

赵鹏,刘明,靳容,陈晓光,张爱君,唐忠厚,魏猛

Effects of Long-Term Application of Organic Fertilizer on Carbon and Nitrogen Accumulation and Distribution of Sweetpotato in Fluvo- Aquic Soil Area

ZHAO Peng,LIU Ming,JIN Rong,CHEN XiaoGuang,ZHANG AiJun,TANG ZhongHou,WEI Meng

表4 土壤性质与甘薯碳氮固持及碳氮比之间的相关性

Table 4 Correlation between soil properties and C/N fixation and C/N ratio of sweetpotato

参数 Parameter pH EC 土壤有机碳SOC 全氮TN 有效磷AP 速效钾AK 碳固持量 The fixation of C 叶Leaf -0.465 -0.602* 0.678** 0.689** 0.419 0.717** 叶柄Periole -0.432 -0.768** 0.839** 0.839** 0.655** 0.736** 藤蔓Stem -0.307 -0.885** 0.773** 0.820** 0.589* 0.636** 根Root -0.573* -0.682** 0.771** 0.822** 0.515* 0.834** 氮固持量 The fixation of N 叶Leaf -0.328 -0.738** 0.659** 0.695** 0.339 0.730** 叶柄Periole -0.560* -0.692** 0.860** 0.863** 0.662** 0.802** 藤蔓Stem -0.363 -0.790** 0.722** 0.750** 0.541* 0.628** 根Root -0.393 -0.719** 0.861** 0.887** 0.839** 0.621* 碳氮比 C/N 叶Leaf -0.017 0.662** -0.280 -0.385 -0.120 -0.343 叶柄Periole 0.132 -0.724** 0.372 0.412 0.287 0.243 藤蔓Stem 0.020 -0.643** 0.420 0.524* 0.313 0.368 根Root -0.044 0.242 -0.461 -0.409 -0.782** 0.081