Atomic Absorption Spectrophotometric Determination of Potassium Content of Soil and Leaf of Camellia oleifera from the Main Producing Areas of Guangxi, China

Camellia oleifera is a species of tree which has a certain collectively cultivated area, belong to Camellia genus, whose seed oil content is high 1 .Camellia oleifera is originated in China is called one of the world's four major woody oil plants as olive, oil palm, coconut.Camellia oleifera is one of the health-based cooking oils focused on promoting by FAO, whose unsaturated fatty acid content is more than 90 %, known as the "Oriental olive oil." 2 .The development of Camellia oleifera has an important role on promoting integrated mountain development, promoting the employment of rural income and safeguarding national grain security and improve people's health 3 .Guangxi province has 300,000 hm 2 Camellia forest, the average annual yield of oil per 667 m 2 is less than 5 kg and income per 667 m 2 is less than 300, which has been a serious impediment to the development of Camellia oleifera one of the most important reasons resulted to the low yield of Camellia forest is poor soil due to lack of management 4 .To promote Camellia production, the concentrations of potassium in tea leaves and soils from major Camellia producing areas in Guangxi were measured.Sampling sites: Samples were collected from Cenxi, Napo, Babu, Bama, Zhaoping, Taine of central Guangxi and Rongan, Rongshui, Sanjiang, Longsheng of northern Guangxi on July in 2011, the range is latitude 23º12'-25º52' and longitude 105º50'-111º12' between.The soils of Cenxi and Zhaoping are the red loam and soils from Sanjiang and

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