Nitrogen fertilizer reduction in rice production for two consecutive years in the Taihu Lake area

2012 ◽  
Vol 146 (1) ◽  
pp. 103-112 ◽  
Author(s):  
Jun Qiao ◽  
Linzhang Yang ◽  
Tingmei Yan ◽  
Feng Xue ◽  
Dong Zhao
Keyword(s):  
Nitrogen Fertilizer ◽  
Taihu Lake ◽  
Rice Production ◽  
Lake Area

Optimizing Nitrogen Fertilizer Application for Rice Production in the Taihu Lake Region, China

Pedosphere ◽  
2012 ◽  
Vol 22 (1) ◽  
pp. 48-57 ◽  
Author(s):  
Mei-Hua DENG ◽  
Xiao-Jun SHI ◽  
Yu-Hua TIAN ◽  
Bin YIN ◽  
Shao-Lin ZHANG ◽  
...  
Keyword(s):  
Nitrogen Fertilizer ◽  
Taihu Lake ◽  
Fertilizer Application ◽  
Rice Production ◽  
Lake Region

scholarly journals High Nitrogen Fertilization Modulates Morpho-Physiological Responses, Yield, and Water Productivity of Lowland Rice under Deficit Irrigation

Agronomy ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1291
Author(s):  
Nasr M. Abdou ◽  
Mohamed A. Abdel-Razek ◽  
Shimaa A. Abd El-Mageed ◽  
Wael M. Semida ◽  
Ahmed A. A. Leilah ◽  
...  
Keyword(s):  
Nitrogen Fertilizer ◽  
Irrigation Water ◽  
Nitrogen Fertilization ◽  
Deficit Irrigation ◽  
Physiological Responses ◽  
Water Productivity ◽  
Water Shortage ◽  
Rice Production ◽  
Lowland Rice ◽  
Nitrogen Fertilizers

Sustainability of rice production under flooding conditions has been challenged by water shortage and food demand. Applying higher nitrogen fertilization could be a practical solution to alleviate the deleterious effects of water stress on lowland rice (Oryza sativa L.) in semi-arid conditions. For this purpose, field experiments were conducted during the summer of 2017 and 2018 seasons. These trials were conducted as split-split based on randomized complete blocks design with soil moisture regimes at three levels (120, 100 and 80% of crop evapotranspiration (ETc), nitrogen fertilizers at two levels (N1—165 and N2—200 kg N ha−1) and three lowland Egyptian rice varieties [V1 (Giza178), V2 (Giza177) and V3 (Sakha104)] using three replications. For all varieties, growth (plant height, tillers No, effective tillers no), water status ((relative water content RWC, and membrane stability index, MSI), physiological responses (chlorophyll fluorescence, Relative chlorophyll content (SPAD), and yield were significantly increased with higher addition of nitrogen fertilizer under all water regimes. Variety V1 produced the highest grain yield compared to other varieties and the increases were 38% and 15% compared with V2 and V3, respectively. Increasing nitrogen up to 200 kg N ha−1 (N2) resulted in an increase in grain and straw yields by 12.7 and 18.2%, respectively, compared with N1. The highest irrigation water productivity (IWP) was recorded under I2 (0.89 kg m−3) compared to (0.83 kg m−3) and (0.82 kg m−3) for I1 and I3, respectively. Therefore, the new applied agro-management practice (deficit irrigation and higher nitrogen fertilizer) effectively saved irrigation water input by 50–60% when compared with the traditional cultivation method (flooding system). Hence, the new proposed innovative method for rice cultivation could be a promising strategy for enhancing the sustainability of rice production under water shortage conditions.

Environmental impact of rice production based on nitrogen fertilizer use

2018 ◽  
Vol 25 (16) ◽  
pp. 15885-15895 ◽  
Author(s):  
Mandana Tayefeh ◽  
Seyyed Mustafa Sadeghi ◽  
Seyyed Ali Noorhosseini ◽  
Jacopo Bacenetti ◽  
Christos A. Damalas
Keyword(s):  
Environmental Impact ◽  
Nitrogen Fertilizer ◽  
Rice Production ◽  
Fertilizer Use

scholarly journals Pollutants Sources and Their Discharging Amount in Taihu Lake Area of Jiangsu Province

2000 ◽  
Vol 12 (2) ◽  
pp. 147-153 ◽  
Author(s):  
LI Ronggang ◽  
◽  
XIA Yuanling ◽  
WU Anzhi ◽  
QIAN Yisheng
Keyword(s):  
Taihu Lake ◽  
Jiangsu Province ◽  
Lake Area

Quantitative Eco-Compensation Criterion in Taihu Lake Area of Jiangsu Province, China

2013 ◽  
Vol 726-731 ◽  
pp. 4095-4100
Author(s):  
Rong Rong Xie ◽  
Yong Pang
Keyword(s):  
Chemical Oxygen Demand ◽  
Total Phosphorus ◽  
Taihu Lake ◽  
Census Data ◽  
Oxygen Demand ◽  
Ammonia Nitrogen ◽  
Pollution Source ◽  
Jiangsu Province ◽  
Lake Area ◽  
Chinese Yuan

To redress the deteriorating environment, policies regarding river eco-compensation have been issued in China since 2008. Due to the high cost, eco-compensation has not been well implemented in the Taihu pilot region. Therefore, how to determine the compensation criterion is already a priority. In this paper, a compensation criterion model based on the treatment costs of sewage was introduced. Using the pollution source census data covering 2007, 2009, 2010 and 2011 in the Taihu lake area of Jiangsu province, the average eco-compensation criterion for chemical oxygen demand (COD) is 2,000 Chinese Yuan (CNY) ± 325 CNY per ton and ammonia nitrogen (NH4-N) and total phosphorus (TP) are 8,000 CNY ± 1,300 CNY and 80,000 CNY ± 13,000 CNY per ton, respectively. The new method can provide an important template for managers when drafting river eco-compensation schemes.

Rice production with minimal irrigation and no nitrogen fertilizer by intensive use of treated municipal wastewater

2014 ◽  
Vol 70 (3) ◽  
pp. 510-516 ◽  
Author(s):  
Ayumi Muramatsu ◽  
Toru Watanabe ◽  
Atsushi Sasaki ◽  
Hiroaki Ito ◽  
Akihiko Kajihara
Keyword(s):  
Nitrogen Fertilizer ◽  
Municipal Wastewater ◽  
Irrigation System ◽  
Nitrogen Supply ◽  
Rice Production ◽  
Paddy Fields ◽  
Treated Wastewater ◽  
Cultivation System ◽  
Treated Municipal Wastewater ◽  
New System

We designed a new cultivation system of rice with circulated irrigation to remove nitrogen from treated municipal wastewater effectively and assessed the possibility of nitrogen removal in the new system without any adverse effects on rice production through bench-scale experiments through two seasons. Overgrowth of the rice plant, which can lead to lodging and tasteless rice, was found in the first season probably because nitrogen supply based on standard practice in normal paddy fields was too much in the closed irrigation system. In the second season, therefore, the amount of treated wastewater initially applied to the system was reduced but this resulted in a considerably decreased yield. On the other hand, the taste of the rice was significantly improved. The two-season experiments revealed that the new system enabled rice production with minimal irrigation (approximately 50% on the yield base compared to normal paddy fields) and no nitrogen fertilizer. The system also achieved >95% removal of nitrogen from the treated wastewater used for circulated irrigation. The accumulation of harmful metals in the rice was not observed after one season of cultivation in the new system. The accumulation after cultivation using the same soil repeatedly for a longer time should be examined by further studies.

Study on Phosphorus Distribution from Sediment of Different Trophic Area of Taihu Lake and its Temporal Changes

2013 ◽  
Vol 295-298 ◽  
pp. 1663-1666
Author(s):  
Jian Hang Qu ◽  
Xiao Bing He ◽  
Hai Feng Li ◽  
Huan Chen Zhai ◽  
Yuan Sen Hu
Keyword(s):  
Taihu Lake ◽  
Algal Growth ◽  
Eutrophic Lake ◽  
Temporal Changes ◽  
Phosphorus Concentration ◽  
Lower Grade ◽  
Lake Area ◽  
Overlying Water ◽  
Phosphorus Forms ◽  
Water Eutrophication

Phosphorus is the key restraining factor for algal growth and water eutrophication, which is a global problem of environmental pollution. Using a sequential phosphorus extraction method, the phosphorus forms in sediment and their distribution from different trophic area of Taihu Lake (China) and their temporal changes were studied. Results showed that, concentration of Fe-P in sediment was the highest and successively Al-P, which was much higher than that of Ca2-P, Ca10-P, Ca8-P and O-P. All the phosphorus forms were more abundant in sediment 16# of eutrophic lake area, higher than that of moderate eutrophic and the lower-grade trophic area, with the last as relatively the lowest. Phosphorus concentration in June and September was much higher than that of March. Phosphorus in sediment of Taihu Lake had great releasing potential to the overlying water.

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