应用15N示踪技术研究控释尿素在稻田中的去向及利用率
|
|
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
|
Studying the Fate and Recovery Efficiency of Controlled Release Urea in Paddy Soil Using 15N Tracer Technique
|
|
PengFei LI, XiaoKun LI, WenFeng HOU, Tao REN, RiHuan CONG, ChangWen DU, LieHuo XING, ShaoHua WANG, JianWei LU
|
|
| 表5 稻田15N平衡与去向 |
| Table 5 15N balance and fate in paddy rice |
|
| 处理 Treatment | 施氮量
N applied
(g·m-2) | 15N吸收量
15N uptake
(g·m-2) | 氮肥利用率
N recovery efficiency (%) | 土壤残留
Residual in soil | 根系吸收
Uptake by root | 总回收
Total recovery | 氮损失
N loss | 差减法
Difference method | 15N示踪法
15N tracer method | 15N
残留量
15N residue | 15N残留率
15N residue rate (%) | 15N吸收量
15N uptake
(g·m-2) | 15N利用率
15N use efficiency
(%) | 15N总
回收量
15N recovery | 15N总
回收率
15N recovery rate (%) | 15N
损失量
15N loss
(g·m-2) | 15N损失率15N loss
rate
(%) | | U | 16.5 | 3.99b | 44.9a | 24.2b | 1.50b | 9.1b | 0.28a | 1.7a | 5.77b | 35.0b | 10.7a | 65.0a | | CRU | 16.5 | 4.52a | 45.8a | 27.4a | 1.65a | 10.0a | 0.26a | 1.6a | 6.43a | 39.0a | 10.1a | 61.0a |
|
|
|