Impact of Alternate Drought and Flooding Stress on Water Use, and Nitrogen and Phosphorus Losses in a Paddy Field

Mei, Wang; Yu, Shu; Shao, Guangcheng; Gao, Shikai; Wang, Jiao; Zhang, Yidi

doi:10.15244/pjoes/75188

Cited by 9 publications

(7 citation statements)

References 27 publications

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“…The experiment was conducted during 2016/2017 and 2017/2018, two growing seasons of winter wheat, under a mobile rain shelter at the Hohai University Water-saving Park (latitude 31 • 57 N, longitude 118 • 50 E). The experimental site has a subtropical humid monsoon climate, with annual average temperature 15.4 • C, annual evaporation rate 900 mm, annual sunshine duration 2017 h, and annual precipitation 1051 mm [34]. The growing season of winter wheat at the experiment site usually is from late October to early June.…”

Section: Experimental Sitementioning

confidence: 99%

Effect of Straw Biochar on Soil Properties and Wheat Production under Saline Water Irrigation

et al. 2019

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Use of saline water for irrigation is essential to mitigate increasing agricultural water demands in arid and semi-arid regions. The objective of this study is to address the potential of using straw biochar as a soil amendment to promote wheat production under saline water irrigation. A field experiment was conducted in a clay loam soil from eastern China during 2016/2017 and 2017/2018 winter wheat season. There were five treatments: freshwater irrigation (0.3 dS m−1), saline water irrigation (10 dS m−1), saline water irrigation (10 dS m−1) combined with biochar of 10, 20, 30 t ha−1. Saline water irrigation alone caused soil salinization and decreased wheat growth and yield. The incorporation of biochar decreased soil bulk density by 5.5%–11.6% and increased permeability by 35.4%–49.5%, and improved soil nutrient status. Biochar also reduced soil sodium adsorption ratio by 25.7%–32.6% under saline water irrigation. Furthermore, biochar alleviated salt stress by maintaining higher leaf relative water content and lower Na+/K+ ratio, and further enhanced photosynthesis and relieved leaf senescence during reproductive stages, leading to better grain formation. Compared to saline water irrigation alone, biochar application of 10 and 20 t ha−1 significantly increased wheat grain yield by 8.6 and 8.4%, respectively. High dose of biochar might increase soil salinity and limit N availability. In the study, biochar amendment at 10 t ha−1 would be a proper practice at least over two years to facilitate saline water irrigation for wheat production. Long-term studies are recommended to advance the understanding of the sustainable use of straw biochar.

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Section: Experimental Sitementioning

confidence: 99%

Effect of Straw Biochar on Soil Properties and Wheat Production under Saline Water Irrigation

et al. 2019

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“…The NH 4 + -N, NO 3 − -N and TN leaching losses in tillering stage and jointing-booting stage accounted for 74.85%~86.26% of the total amount during the whole rice growth season, which was main caused by the high value of N concentrations during this period. And the absorbing ability of plants was limited at the early growth period [37,53]. It is necessary to take effective measures to reduce N leaching losses during the tillering and jointing-booting stages, i.e., the two critical periods.…”

Section: The Amount Of Nitrogen Leaching Lossesmentioning

confidence: 99%

Response of Vertical Migration and Leaching of Nitrogen in Percolation Water of Paddy Fields under Water-Saving Irrigation and Straw Return Conditions

Zheng

Zhang

et al. 2019

Water

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The use of water-saving irrigation techniques has been encouraged in rice fields in response to irrigation water scarcity. Straw return is an important means of straw reuse. However, the environmental impact of this technology, e.g., nitrogen leaching loss, must be further explored. A two-year (2017–2018) experiment was conducted to investigate the vertical migration and leaching of nitrogen in paddy fields under water-saving and straw return conditions. Treatments included traditional flood irrigation (FI) and two water-saving irrigation regimes: rain-catching and controlled irrigation (RC-CI) and drought planting with straw mulching (DP-SM). RC-CI and DP-SM both significantly decreased the irrigation input compared with FI. RC-CI increased the rice yield by 8.23%~12.26%, while DP-SM decreased it by 8.98%~15.24% compared with FI. NH4+-N was the main form of the nitrogen leaching loss in percolation water, occupying 49.06%~50.97% of TN leaching losses. The NH4+-N and TN concentration showed a decreasing trend from top to bottom in soil water of 0~54 cm depth, while the concentration of NO3−-N presented the opposite behavior. The TN and NH4+-N concentrations in percolation water of RC-CI during most of the rice growth stage were the highest among treatments in both years, and DP-SM showed a trend of decreasing TN and NH4+-N concentrations. The NO3−-N concentrations in percolation water showed a regular pattern of DP-SM > RC-CI > FI during most of the rice growth stage. RC-CI and DP-SM remarkably reduced the amount of N leaching losses compared to FI as a result of the significant decrease of percolation water volumes. The tillering and jointing-booting stages were the two critical periods of N leaching (accounted for 74.85%~86.26% of N leaching losses). Great promotion potential of RC-CI and DP-SM exists in the lower reaches of the Yangtze River, China, and DP-SM needs to be further optimized.

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“…Seleiman et al ( 2021 ) argued that insufficient precipitation input is often the main driver of drought, which was consistent with our conclusions. With the changes of temperature and precipitation, the adaptation changes of GY and GPY were relatively consistent ( Figure 1 ), which may be due to the decrease in the absorption and utilization of nitrogen and phosphorus under drought, resulting in GY and GPY generally reduced (Wang et al, 2018 ). The negative effects of drought were significantly alleviated with increased precipitation ( Figure 1B ).…”

Section: Discussionmentioning

confidence: 96%

How Does the Environment Affect Wheat Yield and Protein Content Response to Drought? A Meta-Analysis

et al. 2022

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Wheat (Triticum aestivum L.) is one of the most significant cereal crops grown in the semi-arid and temperate regions of the world, but few studies comprehensively explore how the environment affects wheat yield and protein content response to drought by means of meta-analysis. Therefore, we collected data about grain yield (GY), grain protein yield (GPY), grain protein content (GPC), and grain nitrogen content (GNC), and conducted a meta-analysis on 48 previously published data sets that originate from 15 countries. Our results showed that drought significantly decreased GY and GPY by 57.32 and 46.04%, but significantly increased GPC and GNC by 9.38 and 9.27%, respectively. The responses of wheat GY and GNC to drought were mainly related to the drought type, while the GPY was mainly related to the precipitation. The yield reduction due to continuous drought stress (CD, 83.60%) was significantly greater than that of terminal drought stress (TD, 26.43%). The relationship between the precipitation and GPY increased in accordance with linear functions, and this negative drought effect was completely eliminated when the precipitation was more than 513 mm. Sandy soils and high nitrogen application level significantly mitigated the negative effects of drought, but was not the main factor affecting the drought response of wheat. Compared with spring wheat, the drought resistance effect of winter wheat was more obvious. Evaluation of these models can improve our quantitative understanding of drought on wheat yield and food security, minimizing the negative impact of drought on crop production.

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Impact of Alternate Drought and Flooding Stress on Water Use, and Nitrogen and Phosphorus Losses in a Paddy Field

Cited by 9 publications

References 27 publications

Effect of Straw Biochar on Soil Properties and Wheat Production under Saline Water Irrigation

Effect of Straw Biochar on Soil Properties and Wheat Production under Saline Water Irrigation

Response of Vertical Migration and Leaching of Nitrogen in Percolation Water of Paddy Fields under Water-Saving Irrigation and Straw Return Conditions

How Does the Environment Affect Wheat Yield and Protein Content Response to Drought? A Meta-Analysis

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