Intensified soil acidification from chemical N fertilization and prevention by manure in an 18-year field experiment in the red soil of southern China

Cai, Zejiang; Wang, Boren; Xu, Minggang; Zhang, Huimin; He, Xinhua; Zhang, Lu; Gao, Suduan

doi:10.1007/s11368-014-0989-y

Cited by 230 publications

(130 citation statements)

References 37 publications

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“…However, the decreased MBC under NPK at GZL and QY might attribute to serious soil acidity due to a long-term N fertilization. Indeed, our previous study found that NPK treatment significantly increased soil exchangeable acidity dominated by Al and elevated acidification rates at QY during the decreasing of soil pH (Cai et al, 2014). In this present study, the pH was not significantly changed at ZZ but significantly declined from 7.64 under the control to 6.19 under NPK at GZL, and from 5.70 under the control to 4.44 under NPK at QY after 17 years chemical fertilization.…”

Section: Microbial Biomass Carbon and Microbial Biomass Nitrogencontrasting

confidence: 50%

Long-term combined chemical and manure fertilizations increase soil organic carbon and total nitrogen in aggregate fractions at three typical cropland soils in China

Zhang

et al. 2015

Science of The Total Environment

204

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Section: Microbial Biomass Carbon and Microbial Biomass Nitrogencontrasting

confidence: 50%

Long-term combined chemical and manure fertilizations increase soil organic carbon and total nitrogen in aggregate fractions at three typical cropland soils in China

Zhang

et al. 2015

Science of The Total Environment

204

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“…However, the increase in the NH + 4 concentration (mainly from NH 3 ) exceeded that of NO − 3 (mainly from NO x ), leading to net neutralization and reduced cloud acidity. The rapid increase in the concentration of NH + 4 should be attributable to agricultural fertilization and soil acidification which frequently occurred during recent years (Cai et al, 2015;Xu et al, 2016). The microphysical parameters of the cloud samples varied enormously between the cloud events.…”

Section: Discussionmentioning

confidence: 99%

“…Although the VWM concentration of NO (Guo et al, 2012). This may be attributable to the increasing use of agricultural fertilization and soil acidification (Cai et al, 2015;Xu et al, 2015). As a result, the increased levels of NH The VWM concentrations of acetate, lactate, formate and oxalate were 4.1, 3.0, 1.75 and 0.81 mg L −1 , respectively, accounting for 7.01 % of the TDIC.…”

Section: Chemical Compositionmentioning

confidence: 99%

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Chemical composition and droplet size distribution of cloud at the summit of Mount Tai, China

Li¹,

Wang²,

Chen³

et al. 2017

Atmos. Chem. Phys.

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Abstract. The chemical composition of 39 cloud samples and droplet size distributions in 24 cloud events were investigated at the summit of Mt. Tai from July to October 2014. Inorganic ions, organic acids, metals, HCHO, H 2 O 2 , sulfur(IV), organic carbon, and elemental carbon as well as pH and electrical conductivity were analyzed. The acidity of the cloud water significantly decreased from a reported value of pH 3.86 during (Guo et al., 2012 to pH 5.87 in the present study. The concentrations of nitrate and ammonium were both increased since 2007-2008, but the overcompensation of ammonium led to an increase in the mean pH value. The microphysical properties showed that cloud droplets were smaller than 26.0 µm and most were in the range of 6.0-9.0 µm at Mt. Tai. The maximum droplet number concentration (N d ) was associated with a droplet size of 7.0 µm. High liquid water content (LWC) values could facilitate the formation of larger cloud droplets and broadened the droplet size distribution. Cloud droplets exhibited a strong interaction with atmospheric aerosols. Higher PM 2.5 levels resulted in higher concentrations of water-soluble ions and smaller sizes with increased numbers of cloud droplets. The lower pH values were likely to occur at higher PM 2.5 concentrations. Clouds were an important sink for soluble materials in the atmosphere. The dilution effect of cloud water should be considered when estimating concentrations of soluble components in the cloud phase.

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“…Specifically, the higher soil water content in the 0-60 cm soil layer was observed for the LP and ALP treatments compared with the CK treatment at the tasseling stage. This was mainly because the effectiveness of straw mulching in reducing soil evaporation weakened with natural decomposition [35,36]. On the other hand, the increase in soil water could be attributed to better soil water retention as the crop straw plowed into the soil (LP and ALP) could improve soil physical properties and thus conserve more soil water than the CK treatment did.…”

Section: Effects Of Different Straw Incorporation Modes On Soil Watermentioning

confidence: 99%

An Ammoniated Straw Incorporation Increased Biomass Production and Water Use Efficiency in an Annual Wheat-Maize Rotation System in Semi-Arid China

Zou

Feng

et al. 2020

Agronomy

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Water shortage and excessive chemical fertilizers application result in low soil water and nutrient availability and limit crop production in the Loess Plateau of Northwest China. Ammoniated straw incorporation with N fertilization may be an efficient strategy to maintain agricultural sustainability. However, the interactive effects of straw incorporation and N fertilizer on the biomass water use efficiency (WUE) in the winter wheat–summer maize rotation system remain unclear. A 3-year field experiment was conducted to evaluate the effects of combining ammoniated straw incorporation and N fertilizer on soil water, biomass yield and biomass water use efficiency (WUE) in an annual summer maize (Zea mays L.)—Winter wheat (Triticum aestivum L.) rotation system. There were three treatments: (i) long straw (5 cm) mulching with N fertilizer (CK), (ii) long straw with N fertilizer plowed into the soil (LP), and (iii) ammoniated long straw with N fertilizer plowed into the soil (ALP). Compared with the CK treatment, LP and ALP led to a similar soil water storage capacity. ALP improved summer maize biomass yield and winter wheat biomass yield at the jointing-maturity stage. ALP improved summer maize WUE at the ten-leaf collar-tasseling stage and winter wheat WUE from the tillering stage to the maturity stage. Also, the ALP treatment increased the total water use efficiency (TWUE) of winter wheat by 4.1–22.0%. Overall, ammoniated straw incorporation produced the most favorable biomass yield and WUE in the summer maize—Winter wheat rotation system in the Loess Plateau of China.

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Intensified soil acidification from chemical N fertilization and prevention by manure in an 18-year field experiment in the red soil of southern China

Cited by 230 publications

References 37 publications

Long-term combined chemical and manure fertilizations increase soil organic carbon and total nitrogen in aggregate fractions at three typical cropland soils in China

Long-term combined chemical and manure fertilizations increase soil organic carbon and total nitrogen in aggregate fractions at three typical cropland soils in China

Chemical composition and droplet size distribution of cloud at the summit of Mount Tai, China

An Ammoniated Straw Incorporation Increased Biomass Production and Water Use Efficiency in an Annual Wheat-Maize Rotation System in Semi-Arid China

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