畜牧与饲料科学 ›› 2016, Vol. 37 ›› Issue (9): 32-32.doi: 10.12160/j.issn.1672-5190.2016.09.010

• 草业科学 • 上一篇    下一篇

科尔沁区天然打草场植被特征对刈割频次的响应

杨晓松[1];高丽娟[1];斯日古楞[1];李佳怡[2];张军[1];温超[3,4];刘永志[5];单玉梅[3,4]   

  1. [1]内蒙古通辽市畜牧兽医科学研究所,内蒙古通辽028000 [2]内蒙古民族大学,内蒙古通辽028000 [3]内蒙古农牧业科学院,内蒙古呼和浩特010031 [4]中国科学院内蒙古草业研究中心,内蒙古呼和浩特010031 [5]内蒙古自治区农牧业厅,内蒙古呼和浩特010010
  • 出版日期:2016-09-20 发布日期:2016-09-20
  • 通讯作者: 杨晓松
  • 作者简介:杨晓松(1964一),男,研究员,主要从事饲草料资源利用和草地生态学方面的研究工作。 通讯作者:刘永志(1964一),男,研究员,博士,主要从事草原资源及生态学方面的研究工作。 单玉梅(1980一),女,助理研究员,博士,主要从事草地生态系统结构与功能方面的研究工作。
  • 基金资助:
    公益性行业(农业)科研专项(201303060).

The Responses of Vegetation Characteristic of Natural Meadow on Mowing Frequency in Keerqin District

YANG Xiao-song, GAO Li-juan, Siriguleng, LI Jia-yi, ZHANG Jun, WEN Chao, LIU Yong-zhi, SHAN Yu-mei (1.Tongliao Municipal Institute for Animal Husbandry and Veterinary Medicine Sciences,Tongliao 028000,China;2.Inner Mongolia University for Nationalities,Tongliao 028000,China;3. Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences,Hohhot 010031,China;4. Inner Mongolia Research Center for Prataculture,Chinese Academy of Sciences,Hohhot 010031,China;5. Department of Agriculture and Animal Husbandry of Inner Mongolia,Hohhot 010010, China)   

  • Online:2016-09-20 Published:2016-09-20

摘要: 科尔沁沙化草原区是半干旱天然打草场的重要分布区,针对该区域的草场现状,采用随机区组的试验方法,对科尔沁区天然打草场不同刈割频次下的草地植被特征展开研究。结果表明,刈割频次不同,群落结构和生物量均发生了显著变化,刈割2次处理下的羊草生物量在群落总生物量中所占的比例明显减少,比刈割1次的减少了23.87%;而一年生牧草虎尾草和苣荬菜在刈割2次处理下的生物量比刈割1次的分别增加了14.17%和12.98%;从产草量来看,刈割1次处理下的干草产量略高于刈割2次处理,而鲜草产量是刈割2次处理较高;经济效益分析结果是刈割1次处理的净收入高于刈割2次处理,高出403.10元/hm2。由此可以看出,刈割2次处理减少了群落中的多年生牧草数量,促进了一年生牧草的繁殖,并且投入较高,因此,在科尔沁地区的天然打草场,1年刈割1次更有利于植物群落结构的稳定、更新和生物量的增加。

Abstract: The sandy grassland in Keerqin is an important distribution area of natural meadow in semiarid district. Based on the current situation of the meadow in this region, the grassland vegetation of natural meadow in Keerqin district under different mowing frequency was characterized by using randomized complete block design. The results revealed that the community structure and biomass significantly changed under different mowing frequency. The proportion of biomass of Leymus chinensis accounting for community total biomass was reduced in twice mowing treatment and was decreased by 23.87%compared with that in single mowing treatment. The biomass of Chloris virgate and Sonchus arvensis (annual forage) in twice mowing treatment were increased by 14.17%and 12.98%compared with that in single mowing treatment, respectively. From the aspect of grass yield, the hay yield in single mowing treatment was slightly higher than that in twice mowing treatment, but the fresh grass yield in twice mowing treatment was higher than that in single mowing treatment. The net income in single mowing treatment was 403.10 Yuan/hm 2 higher than that in twice mowing treatment. The combined data showed that the twice mowing treatment reduced the amount of perennial forage in the community, promoted the propagation of annual forage and also increased the input. The results obtained in this study suggest that single mowing per year is beneficial to the stability, regeneration and biomass increasement of plant community structure in natural meadow in Keerqin district.

中图分类号: