耕作方式及秸秆还田对华北平原土壤全氮及其组分的影响

被引：67

作者：

濮超

刘鹏

阚正荣

祁剑英

马守田

赵鑫

张海林

机构：

[1] 中国农业大学农学院农业部农作制度重点实验室

来源：

农业工程学报 | 2018年 / 34卷 / 09期

关键词：

土壤; 氮; 秸秆; 免耕; 保护性耕作; 全氮储量; 颗粒氮; 矿物结合态氮;

D O I：

暂无

中图分类号：

S153.6 [土壤成分];

学科分类号：

090301 [土壤学];

摘要：

为明确耕作方式对农田土壤全氮及其组分的影响,该文于中国农业大学吴桥实验站展开研究。田间试验布置于2008年,设置翻耕秸秆不还田(PT),翻耕秸秆还田(PTS),免耕秸秆还田(NTS)和旋耕秸秆还田(RTS)4个处理。于2015年冬小麦收获后取样,测定分析了土壤全氮、颗粒氮、矿物结合态氮含量以及土壤全氮储量。研究结果表明,0～5和5～10 cm土层的土壤全氮含量NTS和RTS显著高于PTS,但10～20和20～30 cm土层显著降低(P<0.05)。0～50 cm土层的土壤全氮储量秸秆还田各处理间差异不显著,但NTS和PTS较PT分别提高了7.78%和11.09%(P<0.05)。在土壤全氮及其组分中,土壤颗粒氮对耕作方式表现出最高的敏感性。0～5 cm土层的土壤颗粒氮含量及其在土壤全氮中的占比NTS和RTS均高于PTS,但在20～30 cm土层均低于PTS(P<0.05)。与PT相比,PTS仅提高了0～20 cm土层的土壤全氮和颗粒氮含量,而土壤矿物结合态氮含量没有显著差异,NTS和RTS则同步提高了0～10 cm土层的土壤全氮、颗粒氮及矿物结合态氮含量(P<0.05)。综上所述,免耕和旋耕提高了土壤全氮及其组分在表层土壤中的分布,翻耕则在较深土层更具优势,但翻耕阻碍了耕层土壤矿物结合态氮的积累,增加了氮素损失风险。

引用

页码：160 / 166

页数：7

共 22 条

[1]

Tillage effects on labile pools of soil organic nitrogen in a semi-humid climate of Argentina: A long-term field study.[J].Juan M. Martínez;Juan A. Galantini;Matias E. Duval;Fernando M. López.Soil & Tillage Research.2017,

[2]

Effects of straw incorporation on the stratification of the soil organic C; total N and C:N ratio in a semiarid region of China.[J].Peng Zhang;Ting Wei;Yuling Li;Ke Wang;Zhikuan Jia;Qingfang Han;Xiaolong Ren.Soil & Tillage Research.2015,

[3]

Changes in soil organic carbon and nitrogen as affected by tillage and residue management under wheat–maize cropping system in the North China Plain.[J].Shadrack Batsile Dikgwatlhe;Zhong-Du Chen;Rattan Lal;Hai-Lin Zhang;Fu Chen.Soil & Tillage Research.2014,

[4]

Tillage and Residue Management Effects on Soil Carbon and Nitrogen Under Irrigated Continuous Corn [J].

Schmer, M. R. ;

Jin, V. L. ;

Wienhold, B. J. ;

Varvel, G. E. ;

Follett, R. F. .

SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 2014, 78 (06) :1987-1996

[5]

Identifying soil organic carbon fractions sensitive to agricultural management practices.[J].Daniel Plaza-Bonilla;Jorge Álvaro-Fuentes;Carlos Cantero-Martínez.Soil & Tillage Research.2014,

[6]

Effects of agricultural management on chemical and biochemical properties of a semiarid soil from central Spain.[J].S. González-Prieto;M. Díaz-Raviña;A. Martín;C. López-Fando.Soil & Tillage Research.2013,

[7]

Changes in Soil Organic Carbon and Nitrogen Fractions with Duration of No-Tillage Management [J].

Spargo, John T. ;

Cavigelli, Michel A. ;

Alley, Mark M. ;

Maul, Jude E. ;

Buyer, Jeffrey S. ;

Sequeira, Cleiton H. ;

Follett, Ronald F. .

SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 2012, 76 (05) :1624-1633

[8]

Stratification of soil organic C; N and C:N ratio as affected by conservation tillage in two maize fields of China.[J].Yilai Lou;Minggang Xu;Xianni Chen;Xinhua He;Kai Zhao.Catena.2012,

[9]

Stratification ratios in a rainfed Mediterranean Vertisol in wheat under different tillage; rotation and N fertilisation rates.[J]..Soil & Tillage Research.2011,

[10]

Effects of Tillage and Residue Management on Soil Organic Carbon and Total Nitrogen in the North China Plain [J].

Hou, Ruixing ;

Ouyang, Zhu ;

Li, Yunsheng ;

Tyler, Donald D. ;

Li, Fadong ;

Wilson, Glenn V. .

SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 2012, 76 (01) :230-240

← 1 2 3 →