基于不同方法的汉中盆地稻麦轮作土壤供氮能力评价

张方方,马宁博,岳善超,李世清

Evaluation of Nitrogen Supply Capacity of Paddy and Wheat Rotation Soil in Hanzhong Basin by Different Determination Methods

ZHANG FangFang,MA NingBo,YUE ShanChao,LI ShiQing

表4 淹水培养氮矿化势（N0）与不同收割期黑麦草累积吸氮量间的相关系数

Table 4 Correlation coefficient between potentially mineralizable N and N uptake of raygrass in various harvest periods under waterlogged incubation

黑麦草吸氮量 Raygrass uptake N 4次整株累积 The four cubulation in the whole plant 第1次 The first 前2次 The former two 前3次 The former three 前4次 The former four 氮素矿化势N mineralization potential (N0) 0.39 0.855** 0.845** 0.834** 0.840** 起始矿质氮+氮素矿化势Initial mineral N + N0 0.39 0.866** 0.855** 0.845** 0.851**