Soil nitrate-N levels required for high yield maize production in the North China Plain

2008 ◽  
Vol 82 (2) ◽  
pp. 187-196 ◽  
Author(s):  
Zhenling Cui ◽  
Fusuo Zhang ◽  
Yuxin Miao ◽  
Qinping Sun ◽  
Fei Li ◽  
...  
Keyword(s):  
North China Plain ◽  
North China ◽  
High Yield ◽  
Soil Nitrate ◽  
Maize Production ◽  
The North ◽  
The North China Plain ◽  
Nitrate N

scholarly journals Carbon Footprint Analyses and Potential Carbon Emission Reduction in China’s Major Peach Orchards

2018 ◽  
Vol 10 (8) ◽  
pp. 2908 ◽  
Author(s):  
Chaoyi Guo ◽  
Xiaozhong Wang ◽  
Yujia Li ◽  
Xinhua He ◽  
Wushuai Zhang ◽  
...  
Keyword(s):  
Emission Reduction ◽  
North China Plain ◽  
North China ◽  
Irrigation Management ◽  
Ghg Emissions ◽  
High Yield ◽  
Carbon Footprints ◽  
The North ◽  
The North China Plain ◽  
Fruit Orchards

An excess of material input in fruit orchards has brought serious environmental problems, particularly in China. However, studies on the estimation of greenhouse gas (GHG) emissions in peach orchards are limited. In this study, based on questionnaire surveys in major peach-producing regions, including the North China Plain (n = 214), as well as northwest (n = 22) and southwest (n = 33) China, the carbon footprints (CFs) of these orchards were calculated by the life cycle assessment. The potential emission reduction in each region was estimated by combining the GHG emissions and CFs with plantation areas and fruit yields. The results showed that the average GHG emissions in the North China Plain, northwest, and southwest regions were 15,668 kg CO2-eq ha−1, 10,386 kg CO2-eq ha−1, and 5580 kg CO2-eq ha−1, with corresponding CFs of 0.48 kg CO2-eq ha−1, 0.27 kg CO2-eq ha−1, and 0.20 kg CO2-eq kg−1, respectively. The main contribution source of GHG emissions in these three regions was fertilizer (77–95%), followed by electricity, pesticides, and diesel. By adopting advanced farming practices with high yield and a high partial factor productivity of fertilizer, the GHG emissions could be reduced by ~13–35%, with the highest potential reduction in the North China Plain. In conclusion, the GHG emissions and their CFs were impressively high in China’s major peach-producing regions, but these GHG emissions could be substantially decreased by optimizing nutrients and irrigation management, including the rational selection of fertilizer rates and types with water-saving irrigation systems or practices (e.g., mulching) for increasing fertilizer and water use efficiency, and maintaining a sustainable peach production in China or similar countries.

Effects of soil moisture and nitrogen addition on organic carbon mineralization in a high-yield cropland soil of the North China Plain

2014 ◽  
Vol 34 (14) ◽  
Author(s):  
李银坤 LI Yinkun ◽  
陈敏鹏 CHEN Minpeng ◽  
梅旭荣 MEI Xurong ◽  
夏 旭 XIA Xu ◽  
郭文忠 GUO Wenzhong ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Organic Carbon ◽  
North China Plain ◽  
North China ◽  
Carbon Mineralization ◽  
Nitrogen Addition ◽  
High Yield ◽  
The North ◽  
The North China Plain ◽  
Organic Carbon Mineralization

scholarly journals Carbon footprint for wheat and maize production modulated by farm size: a study in the North China plain

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Liantao Hou ◽  
Yinsheng Yang ◽  
Xiaoyi Zhang ◽  
Chunming Jiang
Keyword(s):  
Greenhouse Gas ◽  
Carbon Footprint ◽  
North China Plain ◽  
North China ◽  
Ghg Emissions ◽  
Farm Size ◽  
Maize Production ◽  
Content Type ◽  
The North ◽  
The North China Plain

Purpose The relationship between farm size and greenhouse gas (GHG) emissions has not been clearly defined. This paper aims to assess and compare the impact of farm size on greenhouse gas (GHG) emissions derived from wheat and maize production in the North China Plain (NCP), one of the most important agricultural regions in China. Design/methodology/approach A field survey through face-to-face interviews was conducted to collect the primary data, and life cycle assessment method, a worldwide comparable framework, was then adopted to characterize the farm-size effect on greenhouse gas (GHG) wheat and maize production in NCP. Findings It was confirmed that GHG emissions from N fertilizer production and use were the primary contributor to total carbon footprint (CF). As farm size increased, maize yield increased but wheat yield barely changed, while area-scaled and yield-scaled CF declined for both crops. These results were supposed to relate to utilize the inputs more efficiently resulting from increased application of modern agriculture methods on larger operations. It was also found maize not only had higher grain yields, but possessed much smaller CFs. More notably, the reduction of CF with farm size seemed to be more sensitive for maize as compared to wheat. To further mitigate GHG emissions, farm size should better be larger for wheat than for maize. Originality/value This study provides useful information guide for Chinese agriculture in increasing crop production, raising farm income and relieving environmental burdens caused by the misuse of agricultural resources.

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