长期施用磷肥和有机肥黄壤微生物量磷特征

刘彦伶,李渝,张艳,张雅蓉,黄兴成,张萌,张文安,蒋太明

Characteristics of Microbial Biomass Phosphorus in Yellow Soil Under Long-Term Application of Phosphorus and Organic Fertilizer

YanLing LIU,Yu LI,Yan ZHANG,YaRong ZHANG,XingCheng HUANG,Meng ZHANG,WenAn ZHANG,TaiMing JIANG

表4 不同施肥处理土壤微生物量磷的年周转量及周转期

Table 4 The yearly turnover amount and time of soil microbial biomass P under different fertilization treatments

处理 Treatment 年累加同化量 Accumulative assimilate P (mg·kg-1·a-1) 年累加矿化量 Accumulative mineral P (mg·kg-1·a-1) 年周转量 Turnover amount (TA) (mg·kg-1·a-1) 年周转强度 Turnover intensity (%) 周转期 Turnover time (TT) (a) 玉米吸磷量 P uptake by maize (kg·hm-2) CK 0.62 10.8 11.4 53.0 1.89 13.8 NK 7.12 10.1 17.2 127.5 0.78 16.7 NPK 4.77 15.8 20.5 68.7 1.46 30.0 M 7.87 16.8 24.6 61.7 1.62 29.5 0.5MNP 3.63 16.9 20.5 54.0 1.85 30.2 MNPK 19.9 24.2 44.1 60.2 1.66 32.9