| 甘肃天水麦田土壤线虫种群结构与土壤健康指数初探 |
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| 引用本文： | 刘奇志,边勇,谢文闻,周海鹰,余良,宋艳丽.甘肃天水麦田土壤线虫种群结构与土壤健康指数初探[J].西北农业学报,2006,15(2):81-84. |
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| 作者姓名： | 刘奇志 边勇 谢文闻 周海鹰 余良 宋艳丽 |
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| 作者单位： | 中国农业大学农学与生物技术学院,北京,100094 |
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| 摘 要： | 首次对甘肃天水清水县小泉乡麦田土壤线虫种群进行了探索性调查分析,获得了麦田线虫种群构成关系的初步数据,并根据营养类群将线虫划分为:植物寄生线虫(Phytophage nematode)、食细菌线虫(Bacte-rivorous nematode)、昆虫线虫(Insect nematode)、食真菌线虫(Fungivorous nematode)、杂食/捕食线虫(Om-nivore/Predator nematode)5大类群。研究结果表明,甘肃天水麦田土壤线虫涉及4目9科11属,其中植物寄生线虫涉及2目6科6属;非植物线虫共涉及2目3科5属。植物寄生线虫占绝对优势,占线虫总数的67.7%,食细菌线虫占总数的27.4%,昆虫线虫占总数的4.15%,杂食/捕食类线虫不足1%,未发现食真菌线虫。瓦斯乐斯卡平均指标(WI值)为0.401,远远低于土壤健康一般指数1.000。该结果初步反映了同一个地块多年连续种植小麦引起的严重土壤健康问题,为天水地区种植规划和结构调整提供了可靠的科学依据。
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| 关 键 词： | 小麦根际 土壤线虫 营养类群 瓦斯乐斯卡指标(WI值) 土壤健康 |
| 文章编号： | 1004-1389（2006）02-0081-04 |
| 收稿时间： | 2005-10-17 |
| 修稿时间： | 2005-12-13 |
Nematode Populations and Soil Health Index in Wheat Fields of Tianshui Gansu in China |
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| LIU Qi-zhi,BIAN Yong,XIE Wen-wen,ZHOU Hai-ying,YU Liang and SONG Yan-li.Nematode Populations and Soil Health Index in Wheat Fields of Tianshui Gansu in China[J].Acta Agriculturae Boreali-occidentalis Sinica,2006,15(2):81-84. |
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| Authors: | LIU Qi-zhi BIAN Yong XIE Wen-wen ZHOU Hai-ying YU Liang and SONG Yan-li |
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| Institution: | Agronomy and Bioteehnology College, China Agricultural University, Beijing 100094, China |
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| Abstract: | The nematode populations of wheat fields in Xiaoquan village,Qingshui county,Tianshui city,Gansu province of China were investigated preliminarily.The relationship of nematode populations and their quantities was presented.The recorded nematodes were divided into five trophic groups:Phytophage nematode,Bacterivorous nematode,Insect nematode,Fungivorous nematode and Omnivore/Predator nematode.The results showed that the observed nematodes in the wheat fields in Tianshui region belong to 11Genus in 9 Families of 4 Orders,among which beneficial(non plant feeding) nematodes were related to 2 orders,6 families and 6 genus and harmful(plant parasitic) nematodes were related to 2 orders,3 families and 5 genus.The phytophage nematodes were absolutely dominant,accounted for 67.7% of total nematodes,bacterivorous nematodes for 27.4%,insect nematodes for 4.15% and omnivore/ predator nematodes for 1%.Fungivorous nematodes were not been found in this study.Wasilewska index was only 0.401 which was much lower than 1.000,a general index of soil health.The index data indicated the health problem of soil,caused by wheat replanting year after year on the same fields.The results of this study could contribute to be basic data for Tianshui crop planning and adjusting. |
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| Keywords: | Wheat-rhizosphere Soil nematodes Trophic group Wasilewska index Soil health |
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