摘要
烤烟盆栽试验表明，天然含硒土种烟后，ＮＨ３．Ｈ２Ｏ－Ｓｅ和ＨＣＩ－Ｓｅ及土壤总硒量明显减少，ＮＨ３．Ｈ２Ｏ－Ｓｅ和ＨＣＩ－Ｓｅ是有效硒和固定态硒的来源，土壤施硒种烟后，土壤各形态硒及全硒含量均与施硒量呈极显著的正相关，无效态硒占一半以上，有效硒只占２０％左右，说明土壤具有很强的固硒能力，土壤施硒具有一定的后效。
It is shown by pot experiment that the content of NH3. H2O - Se、HCI - Se and totalSe in soil is remarkably decreased after planting flue - cured tobacco in natural Se - content soil. Thismeans that NH3. H2O - Se and HCI - Se are the source of availiable selenium and fixed selenium. Eachform of soil selenium and total selenium in soil are positively correlated with soil Se supply, but theresidue - Se is over one - second of total and availiable selenium is only twenty percent of total seleniumafter applying Se in soil and this means that Soil has a very strong ability to fix Se, but the effect of applying selenium in soil lasts long.
出处
《湖北民族学院学报（自然科学版）》
CAS
1999年第2期47-50,共4页
Journal of Hubei Minzu University(Natural Science Edition)
关键词
土壤
烤烟
硒
形态
盆栽
soil, flue - cured tobacco, selenium form, variation
