作物轮作对甘薯田土壤微生物群落的影响

刘亚军, 王文静, 王红刚, 王祁, 胡启国, 储凤丽

Effects of Crop Rotation on Soil Microbial Community in Sweet Potato Field

Liu Yajun, Wang Wenjing, Wang Honggang, Wang Qi, Hu Qiguo, Chu Fengli

图1 土壤微生物群落结构(a)、碳源利用能力(b)、多样性指数(c)与环境因子间的RDA分析 AP、AK、AN、TN、TP、OM和pH分别指土壤速效磷、速效钾、碱解氮、全氮、全磷、有机质和pH值;F/B、bacteria、Actinomycete、fungal、G+、G-、G+/C-分别代表土壤真菌/细菌、细菌、放线菌、真菌、革兰氏阳性菌、革兰氏阴性菌、革兰氏阳性菌/革兰氏阴性菌;carboh、pol、carbox、phe、amino、amine分别代表碳水化合物、多聚化合物、羧酸类化合物、芳香类化合物、氨基酸、胺类化合物;shanindx、Mclnindx、Simpindx分别代表丰富度指数、均匀度指数、优势度指数。SS1~SS4、SP1~SP4和SW1~SW4分别表示甘薯―甘薯连作、甘薯―花生轮作和甘薯―小麦轮作的4个重复

Fig.1 The RDA analysis between soil microbial community structure (a), carbon source utilization capacity(b), diversity index (c)and environmental factors The AP, AK, AN, TN, TP, OM and pH represent the soil available phosphorus, available potassium, alkali hydrolyzable nitrogen, total nitrogen, total phosphorus, organic matter and pH value, respectively; The F/B, bacterial, actinomycete, fungal, G+, G-, G+/C- represent the fungi/bacteria ratio, soil fungi, bacteria, actinomycete, Gram-positive bacteria, Gram-negative bacteria, Gram-positive bacteria / Gram-negative bacteria ratio, respectively; The carboh, pol, carbox, phe, amino, amine represent the carbohydrates, polymers, carboxylic acids, aromatic compounds, amino acids, amines, The Shanindx, Mclnindx and Simpindx represent the aroma index, evenness index and Simpson index, respectively. SS1-SS4, SP1-SP4 and SW1-SW4 represent four repeats of sweet potato-sweet potato continuous cropping, sweet potato-peanut rotation and sweet potato- wheat rotation, respectively