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Volume 2 Environment Pollution and Climate Change
ISSN: 2573-458X Climate Change 2018 &
Global ENVITOX 2018
October 04-06, 2018
October 04-06, 2018
London, UK
16th Annual Meeting on
Environmental Toxicology and Biological Systems
&
5th World Conference on Climate Change
JOINT EVENT
Effects of composted sludge application on greenhouse gases emissions from paddy soil and heavy metals
accumulation in soil and plant
Jing Ma, Yaping Shi, Haiyang Yu, Kaifu Song, Hua Xu and Guangbin Zhang
Chinese Academy of Sciences, China
With the increase inmunicipal sludge, applying sludge in agriculture has beenof great concern. Afield experiment was conducted
to investigate the effects of three different fertilization practices (CK, no N-fertilizer application; N240, applying N-fertilizer
at a rate of 240 kg N ha-1; OF, applying composted sludge at a rate of 240 kg N ha-1) on methane and nitrous oxide emissions from
paddy soils and heavy metals accumulation in soil and plant. The results showed that methane emission of treatment OF was 68.09
kg ha-1, being approximately 2-fold those of treatments N240 and CK (p<0.05). The N2O emission of treatment OF was 0.94 kg N
ha-1, being 46% lower than that of treatment N240 (p<0.05) and 6-fold that of treatment CK (p<0.05).The contents of the total heavy
metals in the soil were far below the national standard of environmental quality standards for soils for Grade II (GB 1518-1995) and
no significant difference was observed among three treatments (p>0.05). Different heavy metals accumulated in different parts of the
plant. The accumulation of Zn, Cd was straw>crust >seed, and Cr, Ni, Cu was crust>straw>seed. For treatment OF, the content of Cu
in rice grain was 10% (p>0.05) less than that of treatment N240, but the contents of Cr, Zn and Cd in rice grain were 76%, 31% and
50% (p<0.05) higher than that of treatment N240, respectively.
Recent Publications
1. GuangbinZhang, JingMa, YutingYang,HaiyangYu, Yaping Shi, et al. (2017)Variations of stable carbon isotopes of CH4 emissions
from three typical rice fields in China. Pedosphere 27(1):52–64.
2. Minmin Sun, YuanZhang, JingMa,Wenping Yuan, Xianglan Li, et al. (2017) Satellite data based estimation of methane emissions
from rice paddies in the Sanjing plain in northeast China. PlOS One 12(6):1–16.
3. Gang Liu, Haiyang Yu, Guangbin Zhang, Hua Xu and Jing Ma (2016) Combination of wet irrigation and nitrification inhibitor
reduced nitrous oxide and methane emissions from a rice cropping system. Environmental Science and Pollution Research
23(17):17426–17436.
4. XianfangFan,HaiyangYu,QinyanWu, JingMa,HuaXu, et al. (2016)Effects of fertilizationonmicrobial abundance andemissions
of greenhouse gases (CH4 and NO2) in rice paddy fields. Ecology and Evolution 6(4):1054–1063.
5. Guangbin Zhang, Haiyang Yu, Xianfang Fan, Yuting Yang, JingMa, et al. (2016) Drainage and tillage practices in the winter fallow
seasonmitigate CH4 andNO2 emissions froma double-rice field inChina. Atmospheric Chemistry and Physics 16:11853–11866.
Biography
Jing Ma has her expertise in greenhouse gases emissions and mitigation mechanisms in agriculture
Jing Ma et al., Environ Pollut Climate Change 2018, Volume 2
DOI: 10.4172/2573-458X-C1-003