scholarly journals Diversity and composition of methanotrophs in paddy soil as affected by different long-term fertilizer management from double-cropping paddy fields in Southern China

2017 ◽  
Vol 11 (1) ◽  
pp. 16-27 ◽  
Author(s):  
Tang Haiming ◽  
Xu Yilan ◽  
Xiao Xiaoping ◽  
Liu Jie ◽  
Li Weiyan ◽  
...  
Keyword(s):  
Paddy Soil ◽  
Southern China ◽  
Paddy Fields ◽  
Fertilizer Management ◽  
Double Cropping

Methane and nitrous oxide emissions as affected by long-term fertilizer management from double-cropping paddy fields in Southern China

2016 ◽  
Vol 154 (8) ◽  
pp. 1378-1391 ◽  
Author(s):  
H.-M. TANG ◽  
X.-P. XIAO ◽  
K. WANG ◽  
W.-Y. LI ◽  
J. LIU ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Grain Yield ◽  
Southern China ◽  
Mineral Fertilizer ◽  
Paddy Fields ◽  
Rice Grain ◽  
Fertilizer Management ◽  
Double Cropping ◽  
Rice Residues

SUMMARYThere is limited information about the influences of long-term fertilizer management on methane (CH4) and nitrous oxide (N2O) emissions from double-cropping paddy fields in Southern China. Therefore, the objective of the present study was to characterize the changes of CH4 and N2O related to different fertilizer treatments based on a long-term field experiment. The experiment was initiated in 1986 and consisted of five treatments: unfertilized (CK), mineral fertilizer alone (MF), rice residues plus mineral fertilizer (RF), low manure rate plus mineral fertilizer (M1 + F), and high manure rate plus mineral fertilizer (M2 + F). Investigations were conducted over 2 years, from 2013 to 2014, to examine the CH4 and N2O emissions from paddy field of Southern China. The results indicated that M2 + F plots had the largest CH4 emissions during the early rice and late cropped rice and that MF and RF had larger N2O emissions than CK in both early and late cropped rice. When compared with the control, total N2O emissions in both rice-growing seasons increased in both MF and RF in 2013 and 2014. The global warming potentials (GWP) from paddy fields were ranked as M2 + F > M1 + F > RF > MF > CK. Meanwhile, the results demonstrated that CH4 and N2O emissions were closely associated with the soil redox potential and soil temperature. In summary, the incorporation of rice residues in addition to the use of mineral fertilizer (RF treatment) may be an effective fertilizer management practice for mitigating total GWP per grain yield and maintaining rice grain yield in southern China.

Effects of long‐term fertilizer management on soil bacterial diversity in double‐cropping paddy field of southern China

2020 ◽  
Vol 112 (5) ◽  
pp. 3644-3652
Author(s):  
Haiming Tang ◽  
Yilan Xu ◽  
Chao Li ◽  
Xiaoping Xiao ◽  
Kaikai Cheng ◽  
...  
Keyword(s):  
Bacterial Diversity ◽  
Paddy Field ◽  
Southern China ◽  
Fertilizer Management ◽  
Soil Bacterial Diversity ◽  
Double Cropping ◽  
Soil Bacterial

Functional soil organic matter fractions in response to long-term fertilizer management in a double-cropping paddy field of southern China

2021 ◽  
pp. 1-9
Author(s):  
Haiming Tang ◽  
Chao Li ◽  
Lihong Shi ◽  
Li Wen ◽  
Kaikai Cheng ◽  
...  
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Paddy Field ◽  
Southern China ◽  
Rice Paddy ◽  
Chemical Fertilizer ◽  
Protection Mechanism ◽  
Rice Paddy Field ◽  
Double Cropping

Abstract Soil organic matter (SOM) and its fractions play an important role in maintaining or improving soil quality and soil fertility. Therefore, the effects of a 34-year long-term fertilizer regime on six functional SOM fractions under a double-cropping rice paddy field of southern China were studied in the current paper. The field experiment included four different fertilizer treatments: chemical fertilizer alone (MF), rice straw residue and chemical fertilizer (RF), 30% organic manure and 70% chemical fertilizer (OM) and without fertilizer input as control (CK). The results showed that coarse unprotected particulate organic matter (cPOM), biochemically, physically–biochemically and chemically protected silt-sized fractions (NH-dSilt, NH-μSilt and H-dSilt) were the main carbon (C) storage fractions under long-term fertilization conditions, accounting for 16.7–26.5, 31.1–35.6, 16.2–17.3 and 7.5–8.2% of the total soil organic carbon (SOC) content in paddy soil, respectively. Compared with control, OM treatment increased the SOC content in the cPOM, fine unprotected POM fraction, pure physically protected fraction and physico-chemically protected fractions by 58.9, 106.7, 117.6 and 28.3%, respectively. The largest proportion of SOC to total SOC in the different fractions was biochemically protected, followed by chemically and unprotected, and physically protected were the smallest. These results suggested that a physical protection mechanism plays an important role in stabilizing C of paddy soil. In summary, the results showed that higher functional SOM fractions and physical protection mechanism play an important role in SOM cycling in terms of C sequestration under the double-cropping rice paddy field.

Carbon sequestration efficiency in paddy soil and upland soil under long-term fertilization in southern China

2013 ◽  
Vol 130 ◽  
pp. 42-51 ◽  
Author(s):  
X. Yan ◽  
H. Zhou ◽  
Q.H. Zhu ◽  
X.F. Wang ◽  
Y.Z. Zhang ◽  
...  
Keyword(s):  
Carbon Sequestration ◽  
Paddy Soil ◽  
Southern China ◽  
Upland Soil

Isolation, enumeration, and characterization of diazotrophic bacteria from paddy soil sample under long-term fertilizer management experiment

2009 ◽  
Vol 46 (3) ◽  
pp. 261-269 ◽  
Author(s):  
Rashedul Islam ◽  
Pankaj Trivedi ◽  
Munusamy Madhaiyan ◽  
Sundaram Seshadri ◽  
Gillseung Lee ◽  
...  
Keyword(s):  
Soil Sample ◽  
Paddy Soil ◽  
Fertilizer Management ◽  
Diazotrophic Bacteria

scholarly journals METHANE EMISSION FROM PADDY SOIL IN RELATION TO SOIL TEMPERATURE IN TROPICAL REGION

2016 ◽  
Vol 78 (1-2) ◽  
Author(s):  
Fazli P. ◽  
Hasfalina C. M. ◽  
Mohamed Azwan M. Z. ◽  
Umi Kalsom M. S. ◽  
Nor Aini A. R. ◽  
...  
Keyword(s):  
Soil Temperature ◽  
Methane Emission ◽  
Paddy Soil ◽  
Emission Rate ◽  
Paddy Fields ◽  
Tropical Region ◽  
Emission Pattern ◽  
Short Period ◽  
Methane Emission Rate

Methane (CH4) is 21 times more powerful as a greenhouse gas than carbon dioxide. Wetlands including flooded paddy fields are one of the major sources for this gas. Paddy fields are responsible for producing 25 to 54 Tg of CH4 annually. Methane emission rate could be affected by several factors such as irrigation pattern, fertilizer type, soil organic matter and soil temperature. Among them, soil temperature is a determining factor which deserves to be investigated. This study performed with the aim of understanding the effect of soil temperature on the methane emission rate from paddy soil in a short period of time (hourly) and long term (during rice growing season). The results of this study suggest that soil temperature could control the amount of methane emission and there is a positive and strong correlation in both soil temperature and methane emission pattern in short period of time. However, in case of long term trend, other factors such as water management and plant age decreased this correlation from 0.768 to 0.528.

scholarly journals Effects of Winter Cover Crops Straws Incorporation on CH4 and N2O Emission from Double-Cropping Paddy Fields in Southern China

PLoS ONE ◽  
2014 ◽  
Vol 9 (10) ◽  
pp. e108322 ◽  
Author(s):  
Hai-Ming Tang ◽  
Xiao-Ping Xiao ◽  
Wen-Guang Tang ◽  
Ke Wang ◽  
Ji-Min Sun ◽  
...  
Keyword(s):  
Cover Crops ◽  
Southern China ◽  
N2o Emission ◽  
Paddy Fields ◽  
Double Cropping ◽  
Winter Cover ◽  
Winter Cover Crops ◽  
Ch4 And N2o

scholarly journals Variations and Drivers of Methane Fluxes from Double-Cropping Paddy Fields in Southern China at Diurnal, Seasonal and Inter-Seasonal Timescales

Water ◽  
2021 ◽  
Vol 13 (16) ◽  
pp. 2171
Author(s):  
Linhua Ma ◽  
Bo Liu ◽  
Yuanlai Cui ◽  
Yuanzhi Shi
Keyword(s):  
Southern China ◽  
Management Strategies ◽  
Paddy Fields ◽  
Vegetative Stage ◽  
Jiangxi Province ◽  
Ch4 Emissions ◽  
Growing Seasons ◽  
Double Cropping ◽  
Methane Fluxes ◽  
Carbon Dioxide Co2

Methane (CH4) is the second most important anthropogenic greenhouse gas (GHG) after carbon dioxide (CO2), and paddy fields are among the largest sources of CH4 emissions. Owing to the scarcity of observational data, the characteristics and influencing factors of CH4 fluxes in paddy fields at different timescales need to be further investigated. Observations of CH4 fluxes via eddy covariance (EC) data were performed over four seasons in two paddy fields in Nanchang, Jiangxi Province, China. The pattern, magnitude and biophysical controls of CH4 emissions were explored by wavelet analysis and stepwise multiplicative modelling. The results revealed a distinct, single-peak diurnal pattern in CH4 fluxes during the vegetative stage in all four rice growing seasons and the reproductive stage of early rice. Large seasonal variations in daily CH4 emissions were observed in the two double-cropping paddy fields, and the soil temperature at a depth of 5 cm (Ts5) explained most of the seasonality of the CH4 fluxes. At the inter-seasonal scale, under local farms’ traditional field management method, reducing the amount and frequency of irrigation during the vegetative stage could decrease CH4 emissions in southern China. This study improves the understanding of CH4 emissions and helps in developing GHG management strategies for paddy fields.

scholarly journals Effects of long-term application of different green manures on ferric iron reduction in a red paddy soil in Southern China

2017 ◽  
Vol 16 (4) ◽  
pp. 959-966 ◽  
Author(s):  
Song-juan GAO ◽  
Wei-dong CAO ◽  
Ju-sheng GAO ◽  
Jing HUANG ◽  
Jin-shun BAI ◽  
...  
Keyword(s):  
Paddy Soil ◽  
Iron Reduction ◽  
Ferric Iron ◽  
Southern China ◽  
Green Manures ◽  
Red Paddy Soil
Sign in / Sign up

Export Citation Format

Share Document