1. Soils, 1 Red soil, yellow soil and yellow-red soil developed from sandstone, shale, metamorphic rock, granite, and limestone parent materials can all be afforested. Soil thickness should be above 1m, less than 40cm is not suitable for afforestation. 2 The soil moisture content should not be lower than 15% during the dry season. If the moisture content is too low, the root system of Camellia oleifera cannot get enough water to cause low photosynthetic efficiency and poor plant growth; if the water content is too high, the root system suffocates due to lack of oxygen. 3 The content of gravel in the soil should not exceed 20%, and the bottom of pores should be more than 50%. Loam, light loam and light clay should be preferred. 4 In areas with precipitation below 1000 mm, the topsoil is loose and the seepage force of topsoil should not be less than 20cm per hour. 5 Soil fertility. The content of organic matter, available nitrogen, available phosphorus and available potassium in the soil is high, and the production of camellia is also high, and vice versa. In general, fertile standards are: 1.0-1.5g of nitrogen per kilogram of soil, and not less than 60g of phosphorus per kilogram of soil containing 10% of lime, and not less than 0.4g of potassium per kilogram of soil. 6 Camellia is an acid-loving tree species, and it is generally preferable to grow in soil with a pH of 5-6.5. 2, elevation. Different oil camellia species have different requirements for elevation. Generally speaking, species suitable for cultivation in our country are suitable for altitudes of 60-600m. 3, slope direction, slope and slope position. 1 Camellia has a relatively high light requirement and should be selected on sunny slopes (southern slopes) and semi-sunny slopes (eastern slopes), especially in mountainous areas with overlapping peaks and valleys. In particular, attention should be paid to the selection of woodland slopes, and the south direction should be selected. East or southeast. 2 slope. In order to maintain the soil and water, Camellia should choose slope or gentle slope afforestation below 25. 3 slope position. Different slopes, soil thickness, organic matter accumulation and content are different, directly affecting the growth of Camellia oleifera and flowering results. Oil grown on the lower part of the hillside, regardless of growth, yield, etc. are better than the upper part of the hillside, therefore, the choice of afforestation sites should be Slope and mid slope. Nanning Ousibang Information Technology Co., Ltd. , https://www.osbpills.com