石河子大学农学院,新疆,石河子,832000
[ "王海琪(1996—), 女, 硕士在读研究生, 主要从事作物生理生态研究。E-mail: 1486410951@qq.com" ]
纸质出版:2022
移动端阅览
王海琪, 黄艺华, 蒋桂英, 等. 氮肥基追比例对滴灌春小麦氮代谢及氮肥利用率的影响[J]. 水土保持学报, 2022,36(1):297-306.
WANG Haiqi, HUANG Yihua, JIANG Guiying, et al. Effects of Base Topdressing Ratio of Nitrogen Fertilizer on Nitrogen Metabolism and Use Efficiency of Spring Wheat Under Drip Irrigation[J]. 2022, 36(1): 297-306.
王海琪, 黄艺华, 蒋桂英, 等. 氮肥基追比例对滴灌春小麦氮代谢及氮肥利用率的影响[J]. 水土保持学报, 2022,36(1):297-306. DOI: 10.13870/j.cnki.stbcxb.2022.01.038.
WANG Haiqi, HUANG Yihua, JIANG Guiying, et al. Effects of Base Topdressing Ratio of Nitrogen Fertilizer on Nitrogen Metabolism and Use Efficiency of Spring Wheat Under Drip Irrigation[J]. 2022, 36(1): 297-306. DOI: 10.13870/j.cnki.stbcxb.2022.01.038.
探讨减氮模式下氮肥不同基追比例对滴灌春小麦氮代谢关键酶活性、氮素积累转运、产量及氮肥利用率的影响
为新疆麦区滴灌春小麦高效生产提供科学依据。以中筋型"新春6号"(XC 6)和强筋型"新春37号"(XC 37)小麦品种为材料
设置0∶0
2∶8
3∶7
4∶6
5∶5共5种氮肥基追比处理
研究氮肥基追比例对滴灌春小麦氮代谢及氮肥利用率的影响。结果表明: 同一品种下
随氮肥基追比例的增加
氮代谢酶活性、氮素积累、氮肥利用率(NUE)、籽粒产量及蛋白质产量均呈现先升高后降低的趋势
花前氮素转运率、花前氮素贡献率及氮肥生理利用效率(NPE)则呈相反变化
且同一氮肥基追比例下
上述指标均表现出XC 37高于XC 6。品种与氮肥基追比互作表现为
花前氮素转运量、花后氮素积累量、花后氮素贡献率、NUE、氮肥农学利用效率(NAE)、氮肥偏生产量(NPEP)、氮收获指数(NHI)、籽粒产量、蛋白质产量在3∶7处理下分别比其余处理提高了1.51%~34.93%
10.62%~83.63%
4.82%~25.38%
8.00%~45.11%
6.97%~19.84%
2.00%~5.80%
7.95%~40.38%
1.44%~84.86%
4.44%~98.04%。相关分析表明
NUE与蛋白质产量、籽粒产量、植株氮素积累量、GS、NR均呈显著正相关。说明在氮肥基追比例为3∶7时
由于氮代谢酶活性增强
有利于植株氮素积累
促进籽粒产量、蛋白质产量及氮素利用率的协同提高。
To investigate the effects of different base topdressing rates of nitrogen (N) fertilizer on the activity of key enzymes of N metabolism
N accumulation and transport
yield and N fertilizer utilization in drip irrigated spring wheat under N reduction mode
and to provide a scientific basis for the efficient production of drip irrigation spring wheat in Xinjiang wheat area
with medium gluten Xinchun 6 (XC 6) and strong gluten Xinchun 37 (XC 37) as materials
five nitrogen base topdressing ratios of 0∶0
2∶8
3∶7
4∶6 and 5∶5 were set to study the effects of nitrogen base topdressing ratio on nitrogen metabolism and nitrogen use efficiency of spring wheat under drip irrigation. The results showed that
with increasing N fertilizer basal rate
nitrogen metabolism enzyme activity
nitrogen accumulation
nitrogen fertilizer utilization rate (NUE)
seed yield and protein yield all tended to increase and then decrease
while pre-flowering nitrogen translocation rate
pre-flowering nitrogen contribution rate
and nitrogen fertilizer physiological utilization efficiency (NPE) showed the opposite trend
and the above parameters were higher in XC 37 than XC 6 at the same N fertilizer basal rate. The interact of variety and N fertilizer basal chase ratio showed that pre-flowering N translocation
post-flowering N accumulation
post-flowering N contribution
NUE
N fertilizer agronomic use efficiency (NAE)
N fertilizer partial production (NPEP)
N harvest index (NHI)
seed yield
and protein yield were increased by 1.51%~34.93%
10.62%~83.63%
4.82%~25.38%
8.00%~45.11%
6.97%~19.84%
2.00%~5.80%
7.95%~40.38%
1.44%~84.86%
4.44%~98.04%
respectively
under 3∶7 treatment compared to the rest of the treatments. Correlation analysis showed that NUE was significantly and positively correlated with protein yield
seed yield
plant nitrogen accumulation
GS
and NR. Therefore
a 3∶7 ratio of nitrogen fertilizer base topdressing could improve plant nitrogen accumulation and promote seed yield
protein yield and nitrogen utilization based on the increase of nitrogen metabolizing enzyme activity.
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