应用15N示踪技术研究控释尿素在稻田中的去向及利用率
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李鹏飞, 李小坤, 侯文峰, 任涛, 丛日环, 杜昌文, 邢烈火, 王少华, 鲁剑巍
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Studying the Fate and Recovery Efficiency of Controlled Release Urea in Paddy Soil Using 15N Tracer Technique
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PengFei LI, XiaoKun LI, WenFeng HOU, Tao REN, RiHuan CONG, ChangWen DU, LieHuo XING, ShaoHua WANG, JianWei LU
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| 表1 不同生育期水稻植株各部位干物质积累及分配 |
| Table 1 Dry matter accumulation and distribution of different parts of rice plants at different growth stages |
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| 处理 Treatment | 取样时期
Sampling stage | 干物质量 Dry matter (g·m-2) | | 茎 Stem | 鞘 Sheath | 叶 Leaf | 籽粒 Grain | 穗轴 Cob | 穗 Panicle | 合计 Total | | U | 孕穗期 Booting | 32.45c (7.1) | 179.52c (39.3) | 219.33b (48.0) | — | — | 25.97e (5.7) | 457.27d | | 抽穗期 Heading | 128.47b (15.4) | 248.91b (29.8) | 282.95a (33.9) | 127.24d (15.2) | 47.42c (5.7) | 174.66d (20.9) | 834.99c | | 开花期 Anthesis | 242.49a (17.6) | 301.50a (21.9) | 265.28a (19.3) | 518.20c (37.6) | 50.13c (3.6) | 568.33c (41.2) | 1377.60b | | 灌浆期 Filling | 143.61b (9.7) | 253.03b (17.1) | 196.15bc (13.3) | 827.28b (55.9) | 60.14b (4.1) | 887.42b (60.0) | 1480.21a | | 成熟期 Maturity | 130.89b (8.9) | 196.16c (13.3) | 191.73c (13.0) | 892.38a (60.4) | 65.95a (4.5) | 958.33a (64.9) | 1477.11a | | CRU | 孕穗期 Booting | 51.22d* (8.3) | 283.40a* (46.2) | 244.82b* (39.9) | — | — | 34.11e* (5.6) | 613.55d* | | 抽穗期 Heading | 201.80b* (21.1) | 265.89a* (27.8) | 285.74a (29.9) | 156.57d* (16.4) | 45.84c (4.8) | 202.41d* (21.2) | 955.84c* | | 开花期 Anthesis | 275.86a* (19.2) | 289.80a (20.2) | 266.67ab (18.6) | 548.43c* (38.2) | 54.98b* (3.8) | 603.41c* (42.0) | 1435.74b | | 灌浆期 Filling | 142.73c (9.2) | 282.71a* (18.2) | 209.83c* (13.5) | 858.15b (55.2) | 60.56a (3.9) | 918.71b (59.1) | 1553.98a* | | 成熟期 Maturity | 153.57c* (10.0) | 222.08b* (14.5) | 163.72d* (10.7) | 930.62a (60.8) | 61.17a* (4.0) | 991.79a (64.8) | 1531.16a |
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