Table 4 Effects of returning cover crop on different organic-N compositions in paddy soil at different growing stages of rice plant (mg kg⁻¹).

363.8 ± 12.0b

27.7 ± 3.31c

228.9 ± 6.97b

154.8 ± 10.2b

775.3 ± 34.5b

460.6 ± 10.4c

412.5 ± 13.7a

37.0 ± 2.02b

263.3 ± 11.5a

185.7 ± 11.2a

898.5 ± 26.7a

505.1 ± 7.65b

438.8 ± 15.8a

46.8 ± 3.91a

279.1 ± 6.52a

164.7 ± 9.45b

929.4 ± 30.9a

614.2 ± 11.6a

213.4 ± 12.4c

13.7 ± 1.56c

182.8 ± 4.56b

86.4 ± 4.90b

516.2 ± 20.1c

564.6 ± 14.4b

322.5 ± 12.0b

22.7 ± 2.51b

203.7 ± 7.30a

97.8 ± 7.81a

646.8 ± 26.7b

576.1 ± 10.5b

370.2 ± 27.6a

29.1 ± 3.15a

211.7 ± 6.04a

89.3 ± 6.05b

699.6 ± 30.9a

656.3 ± 8.35a

305.9 ± 8.89c

22.6 ± 3.43c

221.6 ± 8.68b

64.7 ± 5.66c

614.8 ± 41.4c

369.8 ± 28.1c

345.9 ± 15.9b

29.4 ± 4.70b

247.6 ± 8.89a

83.7 ± 11.5a

706.6 ± 28.6b

504.8 ± 16.9b

397.8 ± 18.6a

34.0 ± 4.26a

259.2 ± 8.34a

74.8 ± 13.1b

765.7 ± 22.7a

556.8 ± 10.7a