北京永丰地区绿化带草坪土壤线虫群落特征分析  

Analysis of community characteristics of nematodes in turf soil of Yongfeng virescence region in Beijing

作　　者：刘奇志[1] 梁林琳[1] 杨端[1] 边勇[1] 周海鹰[1] 谢德燕[1] 

机构地区：[1]中国农业大学农业与生物技术学院,北京100193

出　　处：《草业学报》2009年第5期136-141,共6页Acta Prataculturae Sinica

基　　金：国家科技部863课题(2006AA06Z354);北京市政府购买科技服务项目(2007DA903B03-07)资助

摘　　要：对北京永丰地区绿化带草坪中枯黄与健康草坪土壤线虫营养类群及其数量进行了比较，以找出线虫与草坪枯黄的关系。结果表明，该地区无论枯黄还是健康草坪表土下0～20cm土壤中的线虫都涉及5目9科12属，其中植物寄生线虫涉及2目4科5属，非植物线虫共涉及3目5科7属；枯黄草坪中植物线虫占绝对优势，为总数的87．89％，是其他营养类群总和（12．05％）的7倍，其中螺旋属、短体属和毛刺属线虫数量近于健康草坪的2倍；WI值显示北京海淀永丰地区绿化带草坪的土壤健康存在潜在危机，枯黄草坪的土壤健康程度很差。A comparison of trophic groups and quantity of nematodes in wilted and healthy turf soil in Yongfeng virescence region of Beijing was done to study the relationship between nematodes and turf wilt. Nematodes in the 0-20 cm depth of soil, whether in wilted or in healthy turf, belonged to 12 genera in 9 families of 5 orders. Harmful nematodes （phytophage nematodes, PPNs） were classified into 5 genera in 4 families of 2 orders and beneficial nematodes （non PPNs） were classified into 7 genera in 5 families of 3 orders. PPNs were absolutely dominant in wilted turf soil and accounted for 87.89 % of the total number of nematodes. This was seven times more than other trophic groups （12.05%）. Among PPNs, the quantity of nematodes in the genera Helicotylenchus, Pratylenchus and Trichodrus in wilted turf soil were double that in healthy turf soil. The Wasilewska index （WI） indicated that the soil health of healthy turf in Yongfeng virescence region of Beijing, has a potential crisis, while the problem is even worse in the rhizosphere of wilted turf.

关 键 词：枯黄草坪 线虫营养类群 瓦斯乐斯卡指标(WI值) 土壤健康 

分 类 号：S688.4[农业科学—观赏园艺]