施肥和刈割处理模拟放牧对西北针茅生长的影响

doi:10.11733/j.issn.1007-0435.2021.02.013

草地学报 ›› 2021, Vol. 29 ›› Issue (2): 317-323.DOI: 10.11733/j.issn.1007-0435.2021.02.013

施肥和刈割处理模拟放牧对西北针茅生长的影响

张雅楠^1,2, 王成杰^1,2, 韩勇军³, 红灵³, 七十三³, 王占义^1,2

1. 内蒙古农业大学草原与资源环境学院, 内蒙古呼和浩特 010011;
2. 内蒙古农业大学草地资源教育部重点实验室, 内蒙古呼和浩特 010011;
3. 内蒙古自治区鄂尔多斯市农牧局, 内蒙古鄂尔多斯 017200

收稿日期:2020-08-28 修回日期:2020-10-02 出版日期:2021-02-15 发布日期:2021-02-25
通讯作者: 王占义
作者简介:张雅楠(1994-),女,汉族,内蒙古集宁人,博士研究生,主要从事草地资源生态方面的研究,E-mail:imynzhang@163.com
基金资助:
国家自然科学基金项目（31960357；31560141）；内蒙古自治区科技计划项目（2019GG245；2019GG014）资助

Simulating the Effect of Grazing on the Growth of Stipa sareptana var. krylovii by Adding Fertilizer and Mowing

ZHANG Ya-nan^1,2, WANG Cheng-jie^1,2, HAN Yong-jun³, HONG Ling³, QI Shi-san³, WANG Zhan-yi^1,2

1. College of Grassland and Resources and Environment, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia Autonomous Region 010011, China;
2. Key Laboratory of Grassland Resources, Ministry of Education P. R. of China, Hohhot, Inner Mongolia Autonomous Region 010011, China;
3. Ordos Agriculture and Animal Husbandry Bureau, Ordos, Inner Mongolia Autonomous Region 017200, China

Received:2020-08-28 Revised:2020-10-02 Online:2021-02-15 Published:2021-02-25

摘要/Abstract

摘要： 放牧是天然草地最主要的利用方式，其对于草地的影响主要是采食、践踏和排泄作用。不同畜种具有不同的牧食行为，对于草地的影响也不同。为了研究牛羊混合放牧对于西北针茅（Stipa sareptana var. krylovii）草原建群种的影响，本研究设置了对照、添加牛粪+刈割（模拟牛单牧）、添加羊粪+不刈割（模拟羊单牧）、添加牛粪+羊粪+刈割（模拟牛羊混牧）4种处理，在6-12月季测定了西北针茅的生长参数。结果发现在模拟牛羊混牧处理下，西北针茅的植株高度较高，分蘖数适中，而根系生产量相对较小。综上所述，牛羊混合放牧有利于提高西北针茅草原草地生产力的可能性较大；动态观测发现不同处理下西北针茅的根系生产主要发生在生长季，根系的死亡主要发生在非生长季。

关键词: 放牧, 非生长季, 微根窗, 根系死亡

Abstract: Grazing is the most important use of natural grassland,and its effects on grassland are mainly feeding,trampling and excretion. Different types of livestock have different grazing behaviors,and their effects on grassland are also different. In order to study the effect of mixed grazing of cattle and sheep on the constructive species of the Stipa sareptana grassland,following indoor experimental treatments were designed in this study:control (CK_s),addition of cow dung + mowing (to simulate cow single-grazing,CG_s),adding sheep dung + no mowing (to simulate sheep single-grazing,SG_s),adding cow and sheep dung + mowing (to simulate cow and sheep mixed grazing,MG_s). The root and shoot growth dynamics of Stipa sareptana var. krylovii. were determined from June to December. The results showed that the height of Stipa sareptana var. krylovii. under the MG_s treatment was higher than SG_s or CG_s,the number of its tillers was moderate,but the root production was relatively low;Based on these,we can draw a conclusion that mixed grazing with cattle and sheep is more likely to increase the productivity of Stipa sareptana var. krylovii steppe. Dynamic observations found that the root of Stipa sareptana var. krylovii under different treatments were mainly produced in the growing season,and roots mainly died in the non-growing season.

Key words: Grazing, Non-growing season, Mini Rhizotron, Root death

中图分类号:

S812.8

张雅楠, 王成杰, 韩勇军, 红灵, 七十三, 王占义. 施肥和刈割处理模拟放牧对西北针茅生长的影响[J]. 草地学报, 2021, 29(2): 317-323.

ZHANG Ya-nan, WANG Cheng-jie, HAN Yong-jun, HONG Ling, QI Shi-san, WANG Zhan-yi. Simulating the Effect of Grazing on the Growth of Stipa sareptana var. krylovii by Adding Fertilizer and Mowing[J]. Acta Agrestia Sinica, 2021, 29(2): 317-323.

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施肥和刈割处理模拟放牧对西北针茅生长的影响

Simulating the Effect of Grazing on the Growth of Stipa sareptana var. krylovii by Adding Fertilizer and Mowing

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