Effects of Elevated Ammonia Concentration on Corn Growth and Grain Yield Under Different Nitrogen Application Rates
Effects of Elevated Ammonia Concentration on Corn Growth and Grain Yield Under Different Nitrogen Application Rates
复制标题
不同施氮量下升高氨浓度对玉米生长及籽粒产量的影响
DOI：
10.1007/s42729-020-00267-1
复制
发表时间：
2020-05
期刊：
影响因子：
--
通讯作者：
Muhammad Arif Nadeem Saqib
中科院分区：
文献类型：
--
作者：
Xiaoli Chen;Xiaolong Ren;Saddam Hussain;Saddam Hussain;Muhammad Arif Nadeem Saqib
在大气氨氮(NH3)浓度增加的情况下，高等植物的光合作用产量和生长相关方面得到了提高；然而，提高NH3浓度和氮肥用量对作物生长、生长相关方面和产量的综合影响却知之甚少。通过6个开顶室(OTCs)试验，研究了NH3浓度升高和氮素状况对玉米生长和产量的影响。玉米在土壤盆栽中种植90d，在两个氮肥施用量(+N和−N)和两个NH3浓度(0 nL L−1和1000nL L−1)条件下种植OTCs。结果表明，高铵处理玉米株高、总生物量、地上部生物量、地与环境NH3浓度相比，在NH3浓度升高的情况下，地上部生物量和籽粒产量分别增加49%和13%，历年平均值和氮素水平。NH3浓度升高对植物生长发育的影响取决于土壤氮素状况。在氮素充足的条件下，植株生长和籽粒产量受到负面影响，而在缺氮条件下，由于光合作用速率的提高，生物量和籽粒产量得到提高。此外，在氮素供应不足和大气NH3可作为氮素补充源的情况下，玉米植株可能会从NH3的增加中获得更多的好处。
The enhanced photosynthetic production and growth-related aspects in higher plants were reported under increasing atmospheric ammonia (NH3); however, the combined effect of elevated NH3 concentration and nitrogen (N) application rates on crop growth, growth-related aspects, and yield is poorly understood. The present study evaluated the effects of elevated NH3 concentration and N status on corn growth and grain yield in six open-top chambers (OTCs) experiments. Corn was grown for 90 days in soil-filled pots with two N application rates (with and without N (+N and −N)) and two NH3 concentrations (0 nl l−1 and 1000 nl l−1) in OTCs. Results showed that plant height, total biomass, shoot biomass, shoot/root ratio, grain yield, and 100-grain yield of corn plants were increased with decreasing application of N in the soil in the elevated NH3 treatment. Shoots biomass and grain yield were increased by 49% and 13% respectively under elevated NH3 concentration compared with ambient concentration of NH3, averaged across years and N levels. The effect of elevated level of NH3 on development and plant growth depends on the soil N status. Under N-sufficient condition, plant growth and grain yield were negatively affected, whereas in N-deprived condition, biomass production and grain yield were enhanced, because of the stimulated photosynthetic rates. Moreover, corn plants may receive more benefits from NH3 enrichment under the low supply of N nutrient and when atmospheric NH3 can act as an N supplement source.
登录
查看更多内容
影响因子：
2.4
作者：
L. Jing;Liang Shi-qing;L. Yi
通讯作者：
L. Jing;Liang Shi-qing;L. Yi
影响因子：
5.7
作者：
H. Rogers;V. Aneja
通讯作者：
H. Rogers;V. Aneja
影响因子：
2
作者：
Xiaoli Chen;Pute Wu;Xining Zhao;Shiqing Li
通讯作者：
Xiaoli Chen;Pute Wu;Xining Zhao;Shiqing Li
影响因子：
9.4
作者：
E. J. Wilson
通讯作者：
E. J. Wilson
影响因子：
6.5
作者：
J. Clement;J. Loorbach;J. Meijer;P. Hasselt;G. Stulen
通讯作者：
J. Clement;J. Loorbach;J. Meijer;P. Hasselt;G. Stulen