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从18个省、区收集的52份土样,分离到软腐欧氏杆菌(Erwinia spp.)的土样有28份。对不同地区分离到的108个菌株鉴定的结果,95个菌株是E.carotovoravar.carotovora,13个菌株是E.chrysanthemi,未发现E.Carotovora var.atroseptica。1982年田间作物收获后,选6个不同类型田块,对土壤中的软腐欧氏杆菌的数量变动进行了研究。除一块小麦—大豆两熟田未测到外,其他几块土壤中软腐欧氏杆菌的存活时间都在2个月以上。在人工接种的灭菌土中,室外自然条件下,无论是病残体或细菌悬浮液接种都可以存活4个月以上:在温室条件下(20℃左右),细菌悬浮液和病残体接种分别可以存活1和3个月以上。本文并讨论了土壤中湿度和其他微生物对于软腐欧氏杆菌存活影响的可能性。
From 52 soil samples collected from 18 provinces and autonomous regions, 28 soil samples were isolated from Erwinia spp. As a result of identification of 108 strains isolated in different regions, 95 strains were E. carotovoravar. Carotovora and 13 strains were E. chrysanthemi. No E. carotovora var. Atroseptica was found. After harvesting field crops in 1982, six different types of field plots were selected to study the changes in the amount of C. rubrum in the soil. In addition to a piece of wheat - soya two soybean fields were not measured, the other pieces of soil in the survival of soft-shelled Staphylococcus aureus more than 2 months. In artificially inoculated sterilized soil, either in vitro or in natural conditions, inoculated with either the disease or the bacterial suspension can survive for more than 4 months: In a greenhouse environment (around 20 ° C), the bacterial suspension and the disease are inoculated Respectively can survive for 1 and 3 months. This article also discusses the possibility of soil moisture and the influence of other microorganisms on the survival of C. aeruginosa.