Table 5 Residues and apparent balance of phosphorus in paddy soil
From: Effects of no-till and rice varieties on nitrogen and phosphorus balance in rice fields
Time | Bulk density | Soil phosphorus storage | Phosphate fertilizer | Phosphorus storage | BRP | Soil phosphorus storage | BTP | ||
|---|---|---|---|---|---|---|---|---|---|
Soil | Grain | Straw | |||||||
g cm−3 | kg P ha−1 | ||||||||
2016.06–2017.06 | |||||||||
 NTJ | 1.215 | 2400.6 ± 4 | 44 | 2410.7 ± 22a | 14.96 ± 0.4a | 8.70 ± 0.7ab | 10.22 ± 1.8c | 2413.2 ± 4.2a | 7.78 ± 2.1b |
 NTG | 2405.8 ± 14ab | 14.99 ± 0.5ab | 10.12 ± 0.6a | 13.65 ± 0.4b | 2408.3 ± 5.1a | 11.21 ± 2.6ab | |||
 CTJ | 2406.3 ± 19ab | 15.37 ± 0.6a | 7.92 ± 0.9b | 15.00 ± 2.3b | 2409.2 ± 4.3a | 12.11 ± 3.5a | |||
 CTG | 2401.4 ± 8b | 14.20 ± 0.2b | 8.75 ± 0.6ab | 20.22 ± 1.9a | 2403.9 ± 7.5a | 17.78 ± 3.2a | |||
2017.06–2018.06 | |||||||||
 NTJ | 1.221 | 2413.2 ± 4.2a | 44 | 2427.7 ± 6a | 15.76 ± 0.2a | 9.00 ± 0.4ab | 4.71 ± 0.3c | 2428.5 ± 1.5a | 3.83 ± 0.5b |
 NTG | 1.222 | 2408.3 ± 5.1a | 2420.7 ± 11ab | 15.63 ± 0.3ab | 10.58 ± 1.0a | 5.38 ± 1.3bc | 2422.1 ± 2.4b | 4.01 ± 0.7b | |
 CTJ | 1.219 | 2409.2 ± 4.3a | 2417.6 ± 12ab | 15.99 ± 0.2a | 8.37 ± 1.3b | 11.20 ± 1.5b | 2421.0 ± 2.2b | 7.89 ± 1.3a | |
 CTG | 1.220 | 2403.9 ± 7.5a | 2410.4 ± 9b | 14.83 ± 0.3b | 9.17 ± 0.8ab | 13.52 ± 0.8a | 2412.0 ± 3.7c | 11.85 ± 1.6a | |