根结线虫污染的温室番茄土壤修复——土壤修复剂稀释倍数筛选  

Soil Rehabilitation of Greenhouse Tomato Contaminated by Root-knot Nematodes——the Selection of Effective Dilution Times of Soil Amendment

作　　者：谢德燕[1] 刘奇志[1] 王建魁[1] 蒲恒浒[1] 

机构地区：[1]中国农业大学农业与生物技术学院昆虫与线虫学实验室,北京100193

出　　处：《中国农学通报》2008年第10期457-461,共5页Chinese Agricultural Science Bulletin

基　　金：国家科技部863课题"昆虫线虫修复生物污染土壤技术探索"(2006AA06Z354)

摘　　要：为明确笔者实验室研制的不同稀释倍数的土壤修复剂对被南方根结线虫(Meloidogyn incognita)污染的温室番茄土壤的修复效果,该文用浅盘法分离土壤中线虫,鉴定并记录各处理及清水对照的线虫数量、根系根结率。结果显示:在5种稀释倍数中,稀释125倍的土壤修复剂每株、每次施用500ml最能有效地抑制根结线虫,种群数量可控制在30 individuals·100ml-1soil以下,并使根系的根结率减少至40%以下,同时能促进有益的小杆线虫(Rhabditis(Oscheius)spp.)种群扩增(388 indi.·100ml-1soil)。研究结果还显示每25d施用一次土壤修复剂可以较有效地修复被根结线虫污染的土壤。For determing the effectivity of different dilution times of soil amendment developed in author laboratory to rehabilitate soil in greenhouse tomato contaminated by root-knot nematodes（Meloidogyn incognita）, the study was carried out with salver method to isolate, identify and record the amount of nematodes in soil and the ratio of root-knots on tomato roots of different treatments and tap water control. The results shown that among the 5 selections, the soil amendment with 125 times dilution, 500ml·plant-1 volume could control the root knot nematode effectively. With the dilution, the density of root-knot nematodes could be controlled down to 30 individuals·100ml-1soil and the root knot rate on tomato roots could be reduced down to 40%. Simultaneity, the population of beneficial nematodes, Rhabditis （Oscheius） spp. was raised up（388 indi. ·100ml-1 soil）. The result also shown that 25days is an effective interval of applying soil amendment for rehabiliting the contaminated soil in greenhouse tomato.

关 键 词：温室番茄 生物污染 土壤修复剂 根结线虫 小杆线虫 根结率 

分 类 号：X53[环境科学与工程—环境工程] S432.45[农业科学—植物病理学]