The effects of different fertilizer types on soil nutrient status and stoichiometric characteristics of carbon,nitrogen and phosphorus in Camellia oleifolia plantations were studied in order to provide basic reference data for scientific management of such plantations in Guangxi. Treatments of organic fertilizer,pure fertilizer and organic-inorganic compound fertilizer were set up (with a no fertilizer treatment as a control),and the soil samples were collected for chemical property determination. Stoichiometric ratios of soil carbon,nitrogen and phosphorus treated by different types of fertilizers were then analyzed. The results showed that the soil pH of all treatments was generally acidic (3.86～4.06),but the differences were not significant. The content of soil organic carbon ranged from 9.34 to 13.58 g·kg-1,with the pure fertilizer treatment having the lowest content. The contents of alkali-hydrolyzed nitrogen (66.3 mg·kg-1),available phosphorus (4.1 mg·kg-1) and available potassium (66.7 mg·kg-1) in soil treated with organic-inorganic compound fertilizer were all at high levels. The organic-inorganic compound fertilizer treatment significantly reduced the C∶N and C∶P ratios of soils,improved the availability of phosphorus,and maintained the relative balance of nitrogen and phosphorus,which are factors conducive to the growth of camelia tea. The effects of the pure fertilizer treatment on C∶P and N∶P soil ratios were small.
维普
万方数据