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近年来,微量元素在烤烟生产上的作用越来越引起人们的注意。Lukic A 和 Tankovi cZ·(1969)报道,叶面喷施微量元素,特别是铜,能够减少病毒给烟草产量和品质带来的影响,G.S.Miner 和 G.V.Gooding(1981)也得到了类似的结果。在国内,陕西土肥所用锰作烟草盆栽试验,结果表明,锰对烟草除有一定的增产效果外,还可使烟草花叶病的发病指数减少一半。本研究的目的是探讨几种微量元素对改善烤烟品质的作用和对烟草花叶病毒病(普通花叶病和黄瓜花叶病)的防治效果,为在烤烟生产上应用微量元素提供依据。材料和方法供试品种:潘元黄,对烟草花叶病有中度感病性。试验设计:铜、铁、硼、锰四种元素及其混合液的水溶性盐,分别处理,清水作对照。每个处理有两个浓度(表1),共12个处理,
In recent years, the role of trace elements in the production of flue-cured tobacco has drawn more and more attention. Lukic A and Tankovic (1969) reported that foliar application of trace elements, particularly copper, can reduce the impact of the virus on tobacco yield and quality, and G.SMiner and G.V. Gooding (1981) obtained similar results. In China, manganese fertilizers used in soil fertilizers in Shaanxi Province were used as tobacco pot experiments. The results showed that addition of manganese to tobacco could increase the yield of tobacco and halve the incidence of tobacco mosaic disease. The purpose of this study is to explore the effect of several trace elements on improving the quality of flue-cured tobacco and the control effect on tobacco mosaic virus disease (common mosaic disease and cucumber mosaic disease) and to provide basis for the application of trace elements in flue-cured tobacco production. Materials and methods Species tested: Pan Yuan Huang, moderate susceptibility to tobacco mosaic disease. Experimental design: copper, iron, boron, manganese and four kinds of elements of the mixture of water-soluble salts, respectively, treatment, water control. There are two concentrations for each treatment (Table 1), 12 treatments in total,