Results 1 to 10 of about 999,759 (168)

Change in Nitrogen Content in Golden Pear Trees in Response to Irrigation and Nitrogen Fertilization

Guan'gai paishui xuebao, 2023
【Background and objective】 Gold pear is a main fruit in northern China and its production relies on irrigation and fertilization. The purpose of this paper is to study the effects of different combinations of irrigation and nitrogen-fertilization on ...
LIU Ya’nan, BAI Meijian, LI Yinong, ZHANG Baozhong, SHI Yuan, WU Xianbing, SHI Licheng   +6 more
doaj   +1 more source

Efficacy of a Sedimentation-boosting and Purifying Device for Decontaminating Pollutants in Surface Runoff from Paddy Field

Guan'gai paishui xuebao, 2021
【Background】 The catchment of Tai lake is one of the most important rice production basins in China and rice-wheat rotation is its dominant cultivation. However, excessive use of water and fertilizers has led to nutrient loss and eutrophication.
FU Zishi, SUN Huifeng, ZHOU Sheng, ZHANG Jining, ZHANG Xianxian, WANG Cong   +5 more
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Implication of Macroalgal Bloom to Soil Organic Carbon Stock in Seagrass Meadows - A Case Study in South Hainan, China

Frontiers in Marine Science, 2022
The adverse impact of macroalgal blooms associated with nutrient enrichment on seagrass habitats and carbon storage potential is an ecological concern. In the present study, the soil carbon stock and sources were compared between a seagrass meadow where ...
Shunyang Chen, Shunyang Chen, Shiquan Chen, Bin Chen, Bin Chen, Bin Chen, Zhongjie Wu, Wenshuo An, Wenshuo An, Lizhen Luo, Jing Wang, Limei Xie, Jing Zhang, Guangcheng Chen, Guangcheng Chen, Guangcheng Chen   +15 more
doaj   +1 more source

Water Quality Variability and Related Factors along the Yangtze River Using Landsat-8

Remote Sensing, 2021
Chlorophyll-a (Chl-a), total nitrogen (TN), and total phosphorus (TP) are important indicators to evaluate water environmental quality. Monitoring water quality and its variability can help control water pollution.
Yang He, Shuanggen Jin, Wei Shang
doaj   +1 more source

Features of profile distribution and nutrient stocks in drained peat soils

Трансформация экосистем, 2023
The profile distribution and stocks of organic carbon, total nitrogen and phosphorus, as well as C/N ratio, pHKCl and bulk density were studied on drained peat array in soils of various structure and thickness (southern Karelia, Fennoscandia) to assess ...
Inna A. Dubrovina
doaj   +1 more source

Calculation Methods of Total Nitrogen and Total Phosphorus Distribution in Pig Manure Fractions

Инженерные технологии и системы, 2022
Introduction. The study aims to develop and test a comprehensive calculation methodology in a case study of pilot pig complexes to verify reliability of estimates. The methods are required for reliable tracking of the nutrients flow at the farm level and
Ekaterina V. Shalavina, Roman A. Uvarov, Eduard V. Vasilev   +2 more
doaj   +1 more source

Evaluation of Total Nitrogen in Water via Airborne Hyperspectral Data: Potential of Fractional Order Discretization Algorithm and Discrete Wavelet Transform Analysis

Remote Sensing, 2021
Controlling and managing surface source pollution depends on the rapid monitoring of total nitrogen in water. However, the complex factors affecting water quality (plant shading and suspended matter in water) make direct estimation extremely challenging.
Jinhua Liu, Jianli Ding, Xiangyu Ge, Jingzhe Wang   +3 more
doaj   +1 more source

Field diagnostic techniques to determine nitrogen in maize

Terra Latinoamericana, 2021
Few technologies are available to quantify crop's nutritional status during their vegetative cycle, such as in maize. Semiquantitative alternatives could replace the laboratory foliar analysis's classical approach for measuring nitrogen (N) in maize (Zea
Eduhin Roacho-Cortés, Javier Z. Castellanos-Ramos, J. D. Etchevers   +2 more
doaj   +1 more source

Study on Total Control of Total Nitrogen in the Laizhou Bay [PDF]

Water, 2021
Human activity imposes a stronger and increasing impact on the coastal environment by land-based discharge and run-off pollution inputs. Land-based total nitrogen (TN) pollution, as the main cause of eutrophication in the Laizhou Bay, China, should be controlled effectively.
Haohong Peng, Haoyi Geng, Xinyan Mao, Jie Shi, Xianqing Lv   +4 more
openaire   +1 more source

Prediction and mapping of organic carbon and total nitrogen in reclaimed soil profiles in surface coal mining areas based on imaging hyperspectral technology

Meitan xuebao, 2023
After the process of surface mining, stripping and covering, the vertical distribution of organic carbon (SOC) and total nitrogen (TN) in the reclaimed mine soil undergoes great changes, which directly determines the selection of vegetation species and ...
Sihan PENG, Nisha BAO, Haimei LEI, Shanjun LIU, Tianhong YANG   +4 more
doaj   +1 more source