Effects Of Interplanting Crops On Soil And Fruit Characters In Camellia Forest

Camellia(Camellia oleifera Abel) is a evergreen small trees of theaceae Camellia, it is one of the important woody edible oil tree species unique to China. C. oleifera mainly growth in southern region in China, such as Jiangxi, Hunan and Guangxi. Intercropping in forest is one effective way to improve woodland utilization. In this research, 6-year-old Camellia forest were select as the object of study, and grain amaranth, sweet potato and peanut three species different crop, were intercropping respectively in these forest. After intercropping, soil nutrient content and the changes dynamic in crop root district, Camellia and crop intersection, Camellia root district and the effects of intercropping on woodland soil breathing and Camellia fruit production and quality of were focused on. The main results are as follows:1.Interplanting amaranth can improve soil organic matter content in the root domain of C. oleifera, reduce crop and organic matter content of the root domain of C. oleifera, C. oleifera can significantly reduce crop and nitrogen contents of the root domain, but the Camellia forest soils in all regions the rate significantly promoted the increase of potassium content. Interplanting peanuts can improve the root domain and the nitrogen content of the soil in the vicinity of C. oleifera, sasanqua root domain content is significantly higher than that of interplanting crops root domain. Interplanting sweet potato is more conducive to root domain of soil available phosphorus accumulation of phosphorus from your root domain to the root domain of C. oleifera declined.2. After the planting season, amaranth crop soil organic matter decline up to the root domain, C. oleifera but to raise crops and soil total nitrogen, nitrogen and potassium effects are better. Interplanting sweet potato root domain available phosphorus content of C. oleifera can be improved. Interplanting peanuts more effectively improve the soil available nitrogen content in the root domain of C. oleifera.3. Interplanting different crops on soil respiration changes with the seasonal changes of interplanting crops, growing season soil respiration rate is higher than the maturity;Soil respiration rate of interplanting of amaranth, followed by a companion, the least significant for peanuts. Lowest not interplanted with blank.4. Intercropping of Camellia of single fruit weight and yield fruit that year had a significant impact, have little effect on fruit traits. Intercropping grain amaranth heavy weight, yield and intercropping peanut processing, were significantly improved. Camellia fruit production are not closely related to soil respiration rate and significantly correlated with soil available nitrogen, phosphorus and potassium in secret, their correlation coefficients are 0.636, 0.502, 0.773.5. Reasonable planting C. oleifera can improve soil nutrients in the root domain, for the growth and fruiting of C. oleifera provides a more adequate nutrition,but intercropping itself can deplete the soil of nutrients, different crops on the effect of different nutrients to improve there are differences in practice should be based on actual and reasonable to add fertilizer.