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| 不同年限围栏对昭苏退化春秋草地生物量影响的研究 | |
| 引用本文： | 王万林,李海,安沙舟,王雪芬.不同年限围栏对昭苏退化春秋草地生物量影响的研究[J].新疆农业科学,2011,48(6):1104-1109. |
| 作者姓名： | 王万林 李海 安沙舟 王雪芬 |
| 作者单位： | 1. 新疆维吾尔自治区畜牧厅外资项目执行办公室,乌鲁木齐,830000 2. 伊犁昭苏马场,新疆,昭苏,835602 3. 新疆农业大学草业与环境科学学院,新疆草地资源与生态实验室,乌鲁木齐,830052 |
| 基金项目： | 新疆维吾尔自治区现代化畜牧业试验示范项目"伊犁州生态经济型高效草业畜牧业试验研究" |
| 摘 要： | 【目的】探明昭苏春秋草场退化草地在不同围栏年限下群落结构的变化情况,为该地区退化草地改良技术提供理论依据。【方法】采用样方法比较研究不同年限围栏封育对退化草地群落结构、草地盖度、生物量演替特征。【结果】在研究样地中,随着围栏时间的延长草地盖度、生物量显著增加,至围栏4 a达到最大,而后下降;地上生物量分别是围栏外放牧草地的3.32、4.41和3.24倍。优良牧草产量和所占比例随着围栏进程的延长不断增加,但丛生小禾草依次降低,高大禾草与生物量变化一致,针茅优势地位不断强化,在围栏6 a形成单优势种。【结论】实验反映出围栏封育不是时间越长越好,封育时间过长导致针茅优势度过高,形成针茅的单优势种草地,将抑制其它植物生长发育,进而影响草地生产力的发挥。 |
| 关 键 词： | 不同年限围栏 退化草地 生物量 影响 |
The Effect of Biomass of Degenerated Spring-autumn Pasture inside the Different Years Fences in Zhaosu |
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| WANG Wan-lin,LI Hai,AN Sha-zhou,WANG Xue-fen.The Effect of Biomass of Degenerated Spring-autumn Pasture inside the Different Years Fences in Zhaosu[J].Xinjiang Agricultural Sciences,2011,48(6):1104-1109. | |
| Authors: | WANG Wan-lin LI Hai AN Sha-zhou WANG Xue-fen |
| Institution: | WANG Wan-lin1,LI Hai2,AN Sha-zhou3,WANG Xue-fen2(1.Executive Office of Foreign Capital Projects of Xinjiang Animal Husbandry Department,Urumqi,830000,China,2.Grassland Station of Zhaosu Horse Farm,Zhaosu Xinjiang 834500,3.College of Pratacultural and Environmental Science,Xinjiang Agricultural University,Key Laboratory of Grassland Resources & Ecology of Xinjiang,Urumqi 830052,China) |
| Abstract: | 【Objective】The purpose of this study is to seek a theoretical basis for providing technology to improve the degenerated grassland by exploring the community structure of Zhaosu spring-autumn degenerated enclosed grassland inside the different years fences.【Method】Comparison of sampling methods was used to study the effects of different enclosure years on grassland community structure,grass coverage,biomass succession characteristics.【Result】The biomass was significantly increased to the maximum number in the plots of fence 4 a in the study,with the enclosure time to extend the area of the grass coverage,and then it declined;ground biomass inside the fences of 2 a,4 a and 6 a is 3.32 times,4.41 times and 3.24 times respectively than that outside the fences.The proportion of quality forage production is increased with the process of extending the fence along,but clusters of small grasses were decreased in turn,and tall grasses are consistent with the biomass,continuously strengthening the dominance of Stipa capillata in the formation of a single dominant species in the fence of 6 a.【Conclusion】 This study denies the idea that the longer time to fence the grassland,the better.Too longer time to fence the land leads to S.capillata's too strong dominance,thus forming single dominant S.capillata grassland,which will inhibit the growth of other plants,thereby affecting the productivity of grassland that plays. |
| Keywords: | fences of different years degenerated grassland biomass effect |
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