当前位置: X-MOL 学术Int. J. Environ. Res. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Nitrous Oxide (N2O) Estimation from Tropical Rice Paddy Under the Influence of Growth-Regulating Compounds
International Journal of Environmental Research ( IF 3.2 ) Pub Date : 2020-04-02 , DOI: 10.1007/s41742-020-00257-2
Nirmali Bordoloi , Kushal Kumar Baruah , Jinnashri Devi

Nitrous oxide (N2O) is an important long-lived greenhouse gas and is a dominant contributor to stratospheric ozone depletion. Mitigating N2O emission from the rice paddies is one of the important challenges to global food security and climate change research while sustaining optimum productivity. We conducted a 2-year experiment to investigate the effect of different plant growth regulators (PGRs) on N2O emission to the atmosphere. The PGRs namely abscisic acid and cytozyme (20 mg L−1), kinetin (10 and 20 mg L−1) and tea extract (1:20 w/w) along with distilled water as control were sprayed at the tillering and panicle initiation stages of rice crop. Abscisic acid and kinetin (10 and 20 mg L−1) were found to bring about a significant (p < 0.01) reduction in N2O emission over control plants primarily through regulation of leaf growth, plant biomass, stomatal frequency, and xylem vessel size of rice plants. Cytozyme and kinetin application enhanced the flag leaf photosynthetic rate and grain yield through maximum partitioning of photosynthates to the developing grains. The PGRs were found to regulate the transport process of N2O, through manipulation of physiological and anatomical processes of rice plants. The present study indicates that kinetin (10 mg L−1) may be a sustainable mitigation measure for N2O emission reduction with efficient grain productivity and highest net revenue. Effects of growth regulators on N2O emission from rice field were studied. The growth regulators influenced the transport mechanism of N2O to the atmosphere. Kinetin and abscisic acid were effective in reducing N2O emission. Kinetin and cytozyme enhanced the photosynthesis and increased grain productivity. Effects of growth regulators on N2O emission from rice field were studied. The growth regulators influenced the transport mechanism of N2O to the atmosphere. Kinetin and abscisic acid were effective in reducing N2O emission. Kinetin and cytozyme enhanced the photosynthesis and increased grain productivity.

中文翻译:

生长调节化合物影响下热带稻田的一氧化二氮 (N2O) 估算

一氧化二氮 (N2O) 是一种重要的长寿命温室气体,是平流层臭氧消耗的主要贡献者。减少稻田的 N2O 排放是全球粮食安全和气候变化研究的重要挑战之一,同时保持最佳生产力。我们进行了为期 2 年的实验,以研究不同植物生长调节剂 (PGR) 对大气中 N2O 排放的影响。PGRs 即脱落酸和细胞酶 (20 mg L-1)、激动素 (10 和 20 mg L-1) 和茶提取物 (1:20 w/w) 以及作为对照的蒸馏水在分蘖和穗开始时喷洒水稻作物的各个阶段。发现脱落酸和激动素(10 和 20 mg L-1)主要通过调节叶片生长使对照植物的 N2O 排放显着(p < 0.01)减少,水稻植物的生物量、气孔频率和木质部容器大小。细胞酶和激动素的应用通过将光合产物最大程度地分配到发育中的谷物来提高旗叶光合速率和谷物产量。发现 PGR 通过操纵水稻植株的生理和解剖过程来调节 N2O 的运输过程。本研究表明激动素(10 mg L-1)可能是一种可持续的缓解 N2O 排放的缓解措施,具有高效的谷物生产力和最高的净收入。研究了生长调节剂对稻田N2O排放的影响。生长调节剂影响 N2O 向大气的传输机制。激动素和脱落酸可有效减少 N2O 排放。激动素和细胞酶增强了光合作用并提高了谷物生产力。研究了生长调节剂对稻田N2O排放的影响。生长调节剂影响 N2O 向大气的传输机制。激动素和脱落酸可有效减少 N2O 排放。激动素和细胞酶增强了光合作用并提高了谷物生产力。
更新日期:2020-04-02
down
wechat
bug