Fate of 15N fertilizer under different nitrogen split applications to plastic mulched maize in semiarid farmland
文献类型：期刊论文
| 作者 | Shaojie Wang1,4; Shasha Luo3; Shanchao Yue1; Yufang Shen1; Shiqing Li1,2 |
| 刊名 | NUTRIENT CYCLING IN AGROECOSYSTEMS
 |
| 出版日期 | 2016-04-18 |
| 期号 | 105页码:129-140 |
| 通讯作者邮箱 | sqli@ms.iswc.ac.cn |
| 关键词 | 15N recovery Dryland N application Grain yield Plastic mulching |
| 通讯作者 | Li, SQ |
| 英文摘要 |
A 2-year field microplot experiment was
conducted to determine the effects of nitrogen
(N) splits on grain yields and the fate of 15N-labelled
fertilizer applied to plastic mulched maize (Zea mays
L.). Three N split applications at the same rate of
225 kg N hm-2 were performed. The N was applied
at the day before sowing, the eight-leaf stage (V8), and
the silking stage (R1) in the following ratios: 100 %–
0–0 (N1), 40–60 %–0 (N2), and 40–30–30 % (N3).
15N-labelled urea (10.14 atom%) was used to trace the
fate of each N application in the microplots. The
results showed that grain yields increased by 8.3 and
10.7 % in the treatments N2 and N3, respectively,
compared with the N1 treatment. Plant N uptakederived from fertilizer (Ndff, %) averaged
26.8–32.4 % compared with 67.6–73.2 % derived
from soils (Ndfs, %). Split applications of N significantly
increased the Ndff in plant. The residual 15N in
the 0–200 cm soil layer ranged from 48.3 to 51.3 % at
maize harvest, approximately half of which remained
in 0–20 cm soil layer. The 15N recovery efficiency
(15NRE) was 37.5 and 39.1 % for treatments N2 and
N3, respectively, and was significantly higher than
that for N1 treatment (27.9 %). The potential N losses
in the treatments N2 and N3 were 11.2 and 12.7 %,
respectively, and were significantly lower than losses
in treatment N1 (22.2 %). In conclusion, applying N
with two splits could produce higher grain yields,
higher NRE, and lower N losses in semiarid plastic
mulched maize cropping system. |
| 收录类别 | SCI |
| 原文出处 | derived from fertilizer (Ndff, %) averaged 26.8–32.4 % compared with 67.6–73.2 % derived from soils (Ndfs, %). Split applications of N significantly increased the Ndff in plant. The residual 15N in the 0–200 cm soil layer ranged from 48.3 to 51.3 % at maize harvest, approximately half of which remained in 0–20 cm soil layer. The 15N recovery efficiency (15NRE) was 37.5 and 39.1 % for treatments N2 and N3, respectively, and was significantly higher than that for N1 treatment (27.9 %). The potential N losses in the treatments N2 and N3 were 11.2 and 12.7 %, respectively, and were significantly lower than losses in treatment N1 (22.2 %). In conclusion, applying N with two splits could produce higher grain yields, higher NRE, and lower N losses in semiarid plastic mulched maize cropping system. |
| 语种 | 英语 |
| WOS记录号 | WOS:000376295700004 |
| 源URL | [http://ir.iswc.ac.cn/handle/361005/7761]  |
| 专题 | 水土保持研究所_水保所科研产出--SCI_2016--SCI |
| 作者单位 | 1.State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resource, Yangling 712100, China 2.College of Resources and Environmental Sciences, Northwest A&F University, Yangling 712100, China 3.Lab of Soil Microbiology and Nutrient Cycle, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China 4.University of Chinese Academy of Sciences, Beijing 100049, China |
| 推荐引用方式 GB/T 7714 | Shaojie Wang,Shasha Luo,Shanchao Yue,et al. Fate of 15N fertilizer under different nitrogen split applications to plastic mulched maize in semiarid farmland[J]. NUTRIENT CYCLING IN AGROECOSYSTEMS,2016(105):129-140. |
| APA | Shaojie Wang,Shasha Luo,Shanchao Yue,Yufang Shen,&Shiqing Li.(2016).Fate of 15N fertilizer under different nitrogen split applications to plastic mulched maize in semiarid farmland.NUTRIENT CYCLING IN AGROECOSYSTEMS(105),129-140. |
| MLA | Shaojie Wang,et al."Fate of 15N fertilizer under different nitrogen split applications to plastic mulched maize in semiarid farmland".NUTRIENT CYCLING IN AGROECOSYSTEMS .105(2016):129-140. |
入库方式： OAI收割
来源：水土保持研究所
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