Effects of Melastoma dodecandrum intercropping on Camellia oleifera root element content and physiochemical properties of soil
In order to study the effect of intercropping Melastoma dodecandrum on Camellia oleifera and soil,10-year-old C.oleifera plantation was selected as the test material,and 13 elements such as the dry and wet weight of the underground part,the content of carbon,nitrogen and phosphorus in the roots,and the pH,conductivity,capillary porosity,bulk densi-ty,mass moisture content of the soil and the contents of carbon,nitrogen,iron,aluminum,potassium,etc.in the soil were determined.The determination results of each index of C.oleifera forest with and without M.dodecandrum showed that(1)The phosphorus content in the roots of the former was significantly higher than that of the latter(P=0.001 2).(2)The soil moisture content of the former was significantly higher than that of the latter(P=0.03).(3)The soil copper content of the former was significantly higher than that of the latter(P=0.016 9),and the available phosphorus content was significantly higher than that of the latter(P=0.005 3).(4)Correlation analysis showed that the phosphorus content in C.oleifera intercropped with M.dodecandrum was significantly negatively correlated with soil pH.And there was a signif-icant positive correlation between soil mass water content and soil capillary porosity,and a significant negative correlation with soil nitrogen content.For the soil intercropped,copper content was significantly positively correlated with soil potassi-um,iron,phosphorus,available phosphorus content and soil capillary porosity,and significantly negatively correlated with soil zinc content.Soil available phosphorus content was significantly positively correlated with soil copper,potassium and i-ron content.This study shows that after interplanting M.dodecandrum in C.oleifera forest,a significant or extremely signifi-cant impact occurs on the content of phosphorus,soil mass moisture content,available phosphorus and copper in C.oleif-era,but the impact of these indicators on the growth of C.oleifera remains to be further studied.
Camellia oleiferaMelastoma dodecandrumCrop cultivationIntercroppingSoil physical and chemical prop-erties
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