播种方式对紫花苜蓿+无芒雀麦人工草地浅剖面土壤C、N分布及储量的影响

草业学报 ›› 2010, Vol. 19 ›› Issue (6): 41-45.

播种方式对紫花苜蓿+无芒雀麦人工草地浅剖面土壤C、N分布及储量的影响

邰继承,杨恒山,范富,张庆国,宋桂云,苏雅乐

内蒙古民族大学农学院,内蒙古通辽 028042

收稿日期:2010-01-14 出版日期:2010-06-25 发布日期:2010-12-20
作者简介::邰继承(1977-),男,蒙古族,内蒙古阿荣旗人,讲师,硕士。E-mail:taijicheng19771013@126.com
基金资助:
内蒙古民族大学科研创新团队建设计划项目(NMD10-03)资助。
作者简介邰继承(1977-),男,蒙古族,内蒙古阿荣旗人,讲师,硕士。E-mailtaijicheng19771013@126.com

Effects of manual sowing methods of Medicago sativa and Bromus inermis on the distribution and content of soil organic carbon and nitrogen

TAI Ji-cheng, YANG Heng-shan, FAN Fu, ZHANG Qing-guo, SONG Gui-yun, SU Ya-le

Agricultural College, Inner Mongolia University for Nationalities, Tongliao 028042, China

Received:2010-01-14 Online:2010-06-25 Published:2010-12-20

摘要/Abstract

摘要： 采用分层取样法研究了两年生单播紫花苜蓿、单播无芒雀麦、隔行混播和同行混播人工栽培草地土壤碳、氮含量及分布状况。结果表明,在牧草生长时期,单播紫花苜蓿草地土壤容重最大,单播无芒雀麦草地容重最小;0～40cm土层土壤有机碳含量以单播紫花苜蓿草地最大,其次为隔行混播草地,二者与单播无芒雀麦草地、同行混播草地间差异达极显著水平(P＜0.01);土壤全氮含量为单播无芒雀麦草地最低,其他处理间无显著差异(P＞0.05);在0～40cm全剖面,单播紫花苜蓿草地有机碳储量最大,为46.98t/hm²,隔行混播草地次之,为44.77t/hm²,二者显著高于同行混播草地(38.75t/hm²)及单播无芒雀麦草地(36.37t/hm²)(P＜0.05)。

Abstract: A multi-layer sampling method was used to study the distribution and content of soil organic carbon (SOC) and nitrogen under two-year old single and mixed sowings of Medicago sativa and Bromus inermis. The soil bulk density was greatest under the singly sown M. sativa and least under the singly seeded B. inermis. SOC content was highest under singly seeded M. sativa, followed by the interlaced mixed methods during the growth of pasture. There was a significant difference of the last two methods compared with the other methods (P＜0.01). The lowest soil total nitrogen content was in the singly seeded B. inermis treatment and there was no significant difference among the other treatments. In the entire 0-40 cm soil profile, the SOC contents in the singly seeded M. sativa (46.98 t/ha) and interlaced mixed pasture (44.77 t/ha) were significantly greater than in the other mixed pasture (38.75 t/ha) and in singly seeded B. inermis (36.37 t/ha) (P＜0.05).

中图分类号:

邰继承,杨恒山,范富,张庆国,宋桂云,苏雅乐. 播种方式对紫花苜蓿+无芒雀麦人工草地浅剖面土壤C、N分布及储量的影响[J]. 草业学报, 2010, 19(6): 41-45.

TAI Ji-cheng, YANG Heng-shan, FAN Fu, ZHANG Qing-guo, SONG Gui-yun, SU Ya-le. Effects of manual sowing methods of Medicago sativa and Bromus inermis on the distribution and content of soil organic carbon and nitrogen[J]. Acta Prataculturae Sinica, 2010, 19(6): 41-45.

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