Table 1 Effects of different forms of N addition on soil, plant and microbial properties

42.509 (4.332)

35.292 (1.609)

40.679 (2.912)

40.329 (2.287)

37.47 (1.409)

37.462 (0.622)

0.304

0.358

2.555 (0.070)

2.593 (0.137)

2.940 (0.169)

2.753 (0.072)

2.705 (0.038)

2.788 (0.104)

0.325

0.183

16.608 (1.578)

13.72 (0.895)

13.905 (0.923)

14.643 (0.697)

13.88 (0.702)

13.512 (0.677)

0.645

0.302

0.118 (0.008)

0.108 (0.001)

0.111 (0.003)

0.108 (0.003)

0.105 (0.002)

0.109 (0.002)

0.421

0.383

11.295 (1.556)^c

29.540 (5.842)^b

49.817 (2.790)^a

45.975 (5.173)^ab

29.924 (1.236)^b

34.050 (5.987)^ab

0.43

< 0.001

1.673 (0.316)^d

28.950 (6.953)^b

22.750 (3.562)^bc

6.513 (1.379)^cd

2.213 (0.224)^d

115.240 (12.247)^a

0.237

< 0.001

351.345 (61.620)

258.636 (50.380)

260.702 (39.512)

235.843 (34.609)

216.965 (28.755)

222.135 (16.549)

0.414

0.268

6.450 (1.393)

6.775 (0.642)

7.050 (0.972)

6.650 (0.096)

6.900 (0.670)

6.275 (0.256)

0.486

0.984

6.888 (0.081)^a

6.590 (0.079)^b

6.735 (0.093)^ab

6.548 (0.094)^b

6.668 (0.029)^ab

6.030 (0.094)^c

0.111

< 0.001

15.392 (0.271)

15.414 (0.264)

15.705 (0.229)

14.791 (0.747)

15.401 (0.179)

15.799 (0.401)

0.791

0.633

130.283 (11.184)^b

240.610 (40.884)^a

209.565 (25.066)^ab

214.028 (27.775)^ab

169.780 (19.101)^ab

146.265 (23.029)^b

0.178

0.040

110.650 (6.916)^a

57.340 (5.901)^b

115.420 (27.360)^a

93.663 (6.534)^ab

63.250 (6.680)^b

48.168 (10.128)^b

0.598

0.009

14.750 (2.462)

16.500 (1.500)

13.000 (1.291)

11.250 (1.031)

13.750 (1.652)

15.750 (3.227)

0.638

0.408

0.927 (0.081)

0.779 (0.067)

0.957 (0.091)

0.873 (0.069)

0.993 (0.037)

0.810 (0.044)

0.988

0.313