植烟土壤有效态微量元素分析评价及对策
Analysis and Measures on Soil Available Micronutrients from Different Tobacco Growing Areas
-
摘要: 以清江流域植烟土壤为研究对象,对有效态微量元素的含量及分布等进行了研究与分析。结果表明:(1)清江流域植烟土壤中有效态硼和锌含量中等偏低,有效态铁、铜和锰含量较丰富,有效态钼含量极丰富,水溶性氯含量极低;(2)清江流域烟区有效态微量元素含量分布存在明显的地域差异,其中,利川产区土壤有效态铁、锰、水溶性氯含量为最高,有效态钼含量为最低;宣恩产区有效态铜和硼含量为最高,有效态铁含量为最低;恩施市产区以有效态锌含量为最高,而有效态硼和水溶性氯为最低;巴东产区以有效态钼含量为最高,有效态铜和铁含量为最低;咸丰产区以有效态锰为最低。本试验结果显示,清江流域烟区土壤应适当补充含硼、氯等微量元素肥料。其中,恩施市产区应特别注意补充硼肥、来凤产区应注意硼肥高效利用的问题、恩施市、宣恩、巴东、咸丰、来凤产区在生产中应注意适当补充含氯肥料,特别是恩施市产区。Abstract: The content and distribution of soil available micronutrients from tobacco-growing areas in Qingjiangyuan valley of southwest Hubei were studied and evaluated. The results showed that the content of available B and Zn were low, the content of available Cu, Fe and Mn were rich and the content of available Mo was the richest. However, the content of water soluble Cl was the lowest. The distribution of soil available micronutrient contents varied in Qingjiangyuan valley. The content of Fe, Mn and water soluble Cl were the highest, but Mo was the lowest in soils from Lichuan; The content of Cu and B were the highest and the content of Fe was the lowest in Xuan'en area; The content of Zn was the highest and the content B and water soluble Cl were the lowest in Enshi area; The content of Mo was the highest and Cu, Fe was the lowest in badong area; The content of Mn was the lowest in Xianfeng area. Therefore, B and Cl fertilizers should be applied more to tobacco-growing areas of Qingjiang valley. B Fertilizers should be increased in Enshi. Cl fertilizer should be increased in Enshi, Xuan'en, Badong, Xianfeng, Laifeng, especially Enshi.