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有人发现 ,植物生长促生菌 (PGPR)能诱导黄瓜产生诱发系统抗性。为了进一步研究植物生长促生菌在有或无溴甲烷土壤熏蒸情况下对黄瓜生长及其自然发生的病害的作用 ,我们于 1 996年～ 1 997年进行了田间试验 ,试验设 7个植物生长促生菌的种子处理 ,其中包括枯草芽孢杆菌 (Bacilluspumilus) INR7、萎蔫短小杆菌 (Curtolxacterium flaccumfaciens) ME1和枯草芽孢杆菌 (Bacilluspumilus) GBO3 3个菌株的单菌株处理及其 4个混合菌株的处理。两年的数据表明 ,在无溴甲烷 (Me Br)土壤熏蒸的情况下 ,所有 7个植物生长促生菌处理与空白对照相比都能显著促进黄瓜植株生长 ;而在有溴甲烷熏蒸的情况下 ,同样 7个植物生长促生菌处理试验中 ,1 996年有 3个处理而 1 997年只有 1个处理显著促进植株生长。 1 996年试验结果表明 ,7种植物生长促生菌处理中 ,有或无溴甲烷熏蒸处理黄瓜主茎生长长度的结果均相似。两年的田间试验表明 ,有或无溴甲烷的熏蒸 ;7种植物生长促生菌处理与空白对照相比都能显著减轻黄瓜叶病的严重度。 1 996年自然发生的叶病是黄瓜角斑病 (Pseudomonassyringae pv.lachrym ans) ,1 997年出现的是炭疽病菌 (Colletotrichum orbiculare)和角斑病的复合侵染现象。两年中 ,无论是有还是无溴甲烷熏蒸的情
It has been found that plant growth promoting bacteria (PGPR) can induce cucumber induced systemic resistance. In order to further study the role of plant growth-promoting bacteria in cucumber growth and its naturally occurring diseases under fumigation with or without methyl bromide, we conducted a field experiment from 1996 to 1997 with seven plant growth promoting Treatment of viable bacteria, including single strain treatment of 3 strains of Bacillus pumilus INR7, Curtolxacterium flaccumfaciens ME1 and Bacillus pumilus GBO3 and treatment of 4 mixed strains thereof. Two years of data indicate that all seven plant growth-promoting bacteria treatments can significantly promote the growth of cucumber plants in the absence of methyl bromide (Me Br) soil fumigation, whereas in the case of methyl bromide fumigation, In the same seven plant growth-promoting bacteria treatments, three treatments were performed in 1996 and only one in 1997 significantly promoted plant growth. The results of the test in 1996 showed that the results of growth length of main stems of cucumber with and without methyl bromide fumigation were all similar in the seven kinds of plant growth promoting bacteria. Two years of field trials showed that fumigation with or without methyl bromide and seven plant growth-promoting bacteria treatments significantly reduced the severity of cucumber leaf disease compared to the blank control. The naturally occurring leaf disease in 1996 was Pseudomonas syringae pv. Lachrym ans, and in 1997 the complex infection of Colletotrichum orbiculare and angular leaf spot occurred. In two years, no matter whether there is a bromoform methane fumigation situation