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Microcalorimetric study of the effects of long-term fertilization on soil microbial activity in a wheat field on the Loess Plateau

文献类型： 外文期刊

作者： Zhang, Qi 1 ; Liu, Xiaomei 1 ; Ma, Xiaojun 1 ; Fang, Jian 2 ; Fan, Tinglu 3 ; Wu, Fasi 1 ; An, Lizhe 1 ; Feng, Huyuan 1 ;

作者机构： 1.Lanzhou Univ, Sch Life Sci, MOE Key Lab Cell Activ & Stress Adaptat, Lanzhou 730000, Peoples R China

2.Lanzhou Univ, Coll Chem & Chem Engn, Lanzhou 730000, Peoples R China

3.Gansu Acad Agr Sci, Dryland Agr Inst, Lanzhou 730070, Gansu, Peoples R China

关键词： Microcalorimetry;Wheat field;Long-term fertilization;Soil microbial activity

期刊名称：ECOTOXICOLOGY （ 影响因子：2.823； 五年影响因子：2.958 ）

ISSN： 0963-9292

年卷期： 2014 年 23 卷 10 期

页码：

收录情况： SCI

摘要： The effects of the long-term inorganic (nitrogen, N; phosphate, P) and organic (manure, M; straw, S) fertilizers/managemenet individually and in combinations (N, NP, SNP, M, and MNP) on soil microbial activity were investigated in a wheat field on the Loess Plateau, China. Microcalorimetry was used to determine microbial activity under different treatments. Nearly 30 years of consecutive fertilization has altered the culturable population of soil bacteria and fungi, the highest ones were detected in the treatments of manure and MNP, followed by the NP and SNP treatments. The microbial growth rate constant (mu/h(-1)) was significantly greater in the MNP treatment than all the other treatments. The total heat exchange values (Q/J) were the highest in the MNP and NP treatments, which were significantly different from the N and M treatments. The peak height (P-t/mu W) were significantly higher in MNP and NP treatments than in the remaining treatments. The peak time values (t(p)/h) among the MNP, NP, SNP and M, N and CK treatments were significantly different. In general, comparing with control, soil microbial activity was much higher in MNP, NP and SNP treatments, all including the phosphate fertilizer. Our results showed that the application of inorganic fertilizer and organic manure have positive effects on multiple soil chemical parameters, soil microorganism abundance and activity, and hence crop yield.

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[1]Soil Microbial Activity During Secondary Vegetation Succession in Semiarid Abandoned Lands of Loess Plateau. Jiang Jin-Ping,Xiong You-Cai,Li Feng-Min,Jiang Hong-Mei,Ye De-You,Jiang Jin-Ping,Song Ya-Jie.

[2]Trends in grain yields and soil organic C in a long-term fertilization experiment in the China Loess Plateau. Xu, Minggang,Fan, Tinglu,Song, Shangyou,Fan, Tinglu,Zhou, Guangye,Ding, Linping.

[3]Response of Soil Organic Carbon and Its Aggregate Fractions to Long-Term Fertilization in Irrigated Desert Soil of China. Chai Yan-jun,Zeng Xi-bai,Su Shi-ming,Bai Ling-yu,E Sheng-zhe,Huang Tao,Che Zong-xian. 2014

[4]Crop yield, nitrogen uptake and nitrate-nitrogen accumulation in soil as affected by 23 annual applications of fertilizer and manure in the rainfed region of Northwestern China. Yang, Sheng-Mao,Malhi, S. S.,Song, Jian-Rong,Xiong, You-Cai,Yue, Wei-Yun,Lu, Li Li,Wang, Jian-Guo,Guo, Tian-Wen. 2006

[5]Grain yield and water use in a long-term fertilization trial in Northwest China. Fan, TL,Wang, SY,Tang, XM,Luo, JJ,Stewart, BA,Gao, YF. 2005

[6]Long-term fertilization effects on grain yield, water-use efficiency and soil fertility in the dryland of Loess Plateau in China. Fan, TL,Stewart, BA,Yong, W,Luo, JJ,Zhou, GY. 2005

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