Optimal nitrogen input for higher efficiency and lower environmental impacts of winter wheat production in China

Liu, Hui; Wang, Zhaohui; Rao, Yu; Li, Fucui; Li, Keyi; Cao, Huiming; Yang, Ning; Li, Menghua; Dai, Ji; Zan, Yaling; Li, Qiang; Xue, Cheng; He, Gang; Huang, Duan; Huang, Ming; Liu, Jinshan; Qiu, Weihong; Zhao, Hubing; Mao, Hui

doi:10.1016/j.agee.2016.03.022

Cited by 117 publications

(52 citation statements)

References 44 publications

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“…The effect of reduced nitrogen fertilizer addition on wheat yields was similar to that in a previous data analysis in which the maximum yield was achieved at approximately 210 kg N/ ha in NCP (Chen et al, 2014;Liu et al, 2016). The effect of reduced nitrogen fertilizer addition on wheat yields was similar to that in a previous data analysis in which the maximum yield was achieved at approximately 210 kg N/ ha in NCP (Chen et al, 2014;Liu et al, 2016).…”

Section: Discussionsupporting

confidence: 83%

“…Our results showed that wheat yields were not significantly decreased by moderately reduced nitrogen fertilizer addition (280-140 kg N/ha at increments of 70 kg N/ha), and maximum yields were obtained with 210 kg N/ha except under conventional irrigation treatments in 2014. The effect of reduced nitrogen fertilizer addition on wheat yields was similar to that in a previous data analysis in which the maximum yield was achieved at approximately 210 kg N/ ha in NCP (Chen et al, 2014;Liu et al, 2016). This result suggests that an appropriate decline in nitrogen fertilizer addition will not reduce the wheat grain yield but will increase nitrogen partial factor productivity and reduce environmental hazards (Chen et al, 2014;Ju et al, 2009).…”

Section: Discussionsupporting

confidence: 82%

“…To achieve high grain yields, additional water has been applied, which has resulted in a rapid decline in the groundwater table at an average rate of approximately 1 m per year in recent years (IGSNRR, 2016) and restricted sustainable agricultural development (Zhang et al, 2004). The amount of fertilizer applied is far greater than the wheat growth demand (325 kg N/ha; Ju et al, 2009), while the recommended nitrogen rate for wheat in the winter wheat-summer maize rotation systems in the NCP is 203 to 230 kg/ha (Liu et al, 2016). The amount of fertilizer applied is far greater than the wheat growth demand (325 kg N/ha; Ju et al, 2009), while the recommended nitrogen rate for wheat in the winter wheat-summer maize rotation systems in the NCP is 203 to 230 kg/ha (Liu et al, 2016).…”

mentioning

confidence: 99%

“…In addition to water shortages, excessive N application has also caused a series of environmental problems, including increased greenhouse gas emission, soil acidification, and biodiversity loss (Bardgett & Wardle, 2010;Guo et al, 2010;Tan et al, 2017). The amount of fertilizer applied is far greater than the wheat growth demand (325 kg N/ha; Ju et al, 2009), while the recommended nitrogen rate for wheat in the winter wheat-summer maize rotation systems in the NCP is 203 to 230 kg/ha (Liu et al, 2016). Therefore, there is an urgent need to identify adequate combinations of reduced irrigation and nitrogen application to ensure sufficient yield with relatively lower environmental costs for the government and researchers (Chen et al, 2014;Ju et al, 2009).…”

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confidence: 99%

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Effect of coupled reduced irrigation and nitrogen fertilizer on soil mite community composition in a wheat field

Chen

Ouyang

Liu

et al. 2019

Ecology and Evolution

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Groundwater and nitrogen fertilizer overuse severely threatens crop productions; thus, current ecological agriculture requires low irrigation and nitrogen fertilizer inputs. The effects of combined reduced irrigation and nitrogen fertilizer addition on soil organism (e.g., mite) community and biodiversity remain poorly understood. We analyzed soil mite community composition, wheat grain yield, and soil characteristics in a 10‐year manipulation experiment with two levels of irrigation (reduced and conventional irrigation) and five nitrogen fertilizer levels (0, 70, 140, 210, and 280 kg N/ha). Reduced irrigation (20% reduction, from 280 to 220 mm) and nitrogen fertilizer (25% reduction, from 280 to 210 kg N/ha) addition did not significantly influence soil mite community and wheat yield. The relative abundances of fungivores and predators showed negative quadratic relationships with wheat yield, while that of plant parasites showed a positive relationship. The relationships between soil mite trophic groups and wheat yield revealed that we can evaluate the impacts of reduced irrigation and nitrogen fertilizer addition from the perspective of soil fauna. Soil mite community composition was altered by soil abiotic factors prior to reduced irrigation and nitrogen fertilizer addition. Overall, moderate reductions of irrigation and nitrogen fertilizer may not threaten to soil mite community and diversity or decrease crop production; in contrast, such reductions will benefit mite community development and the sustainable agriculture.

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Section: Discussionsupporting

confidence: 83%

Section: Discussionsupporting

confidence: 82%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Effect of coupled reduced irrigation and nitrogen fertilizer on soil mite community composition in a wheat field

Chen

Ouyang

Liu

et al. 2019

Ecology and Evolution

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“…At the end of the last century the yield of rice, wheat and corn per unit of area increased several fold due to biological development and use of fertilizers, pesticides and energy. There are studies where the reported N application rate is as high as 750 kg ha -1 (Liu et al, 2016). However, further unconditioned agro-technical intensification may change soil ability to produce yield (Yue et al, 2012).…”

Section: Resultsmentioning

confidence: 99%

Assessment of greenhouse gas emission from life cycle of basic cereals production in Poland

Wójcik‐Gront

Bloch-Michalik

2016

Zemdirbyste-Agriculture

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The main objective of this study was to assess how much greenhouse gas (GHG) is emitted on average in the life cycle of basic cereals production in Poland. The crops included in the study are winter and spring wheat, winter and spring barley, winter and spring triticale, winter rye and spring oats. The data were taken from the national-scale, multi-environmental trials in 89 locations for years 2010-2015. The research also included comparison of two agrotechnical intensity levels: moderate with the use of nitrogen, potassium and phosphorus fertilization, insecticides, herbicides and pre-sowing treatment -a 1 , and intensive with the additional use of fungicides, growth regulator and higher nitrogen fertilization rate -a 2 , for most cereal species. The results are expressed in the amount of greenhouse gas emitted per hectare and per kilogram of grain in cereal production and also contain the uncertainties attributed to the greenhouse gas emission calculated as propagation of error. The lowest emission for the levels a 1 and a 2 was estimated in the production of winter rye (0.254 ± 0.012 and 0.285 ± 0.014 kg CO 2 eq. kg -1 , respectively). The highest emission in the a 1 level was estimated for spring triticale (0.308 ± 0.021 kg CO 2 eq. kg -1 ) and in the a 2 level for spring wheat (0.334 ± 0.016 kg CO 2 eq. kg -1 ). The conclusion of the study was that the main source of greenhouse gas emission from cereal production in Poland is nitrogen fertilizer use. It was also found that in most crops greenhouse gas emissions per unit of produced grain increased with the crop production intensification. It happens mostly due to the plant nitrogen over-fertilization.

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Effects of nitrogen type on rainfed maize nutrient uptake and grain yield

et al. 2021

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Urea blended with slow‐release nitrogen fertilizer (UNS) is considered as a promising alternative to increase crop yields compared with the conventional split urea (U) application or slow‐release nitrogen fertilizer (SRF). However, the yield‐increasing effect and mechanism of UNS under different rainfall conditions is still unclear. A field experiment was conducted during 2016–2020 to evaluate the effects of UNS on dry matter (DM), nutrient uptake, and grain yield of rainfed maize (Zea mays L.) in Northwest China. The results showed that UNS increased the average total DM and N uptake by 19.6 and 27.5% compared with U, and by 15.8 and 18.2% relative to SRF, respectively. The average maximum DMaccumulation and N uptake rates in UNS were increased by 26.5 and 6.5% compared with those in U, and by 20.4 and 14.0% relative to those in SRF, respectively. Compared with U and SRF, UNS increased N remobilization from vegetative organs to grains after silking by 51.9 and 40.7%, respectively. Dry matter accumulation, NPK uptake, and N remobilization in 2017 (“pre‐dry”) and 2018 (“normal”) were greater than those in 2016 (“post‐dry”), 2019 (“wet”), and 2020 (“wet”). Grain yield in U was relatively low and stable over the five growing seasons, while grain yield followed the order of 2017 > 2018 ≈ 2019 ≈ 2020 > 2016 in UNS, and 2018 ≈ 2019 > 2020 > 2017 > 2016 in SRF. The UNS increased grain yield by 46.2 and 28.6% compared with U and SRF, respectively. Therefore, UNS can be used as a promising N management practice to improve the ability of agricultural ecosystems to cope with climate change, and ultimately maintain high crop yields.

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Optimal nitrogen input for higher efficiency and lower environmental impacts of winter wheat production in China

Cited by 117 publications

References 44 publications

Effect of coupled reduced irrigation and nitrogen fertilizer on soil mite community composition in a wheat field

Effect of coupled reduced irrigation and nitrogen fertilizer on soil mite community composition in a wheat field

Assessment of greenhouse gas emission from life cycle of basic cereals production in Poland

Effects of nitrogen type on rainfed maize nutrient uptake and grain yield

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