Study on the Inoculation Effects of Field grown Casuarina equisetifolia with Frankia Alginate Beads

A large scale field experiments were carried out in coastal sandy areas of Yangxi,Huilai and Taishan of Guangdong Province,to evaluate the inoculation effects of Casuarina equisetifolia with Frankia alginate beads.Results showed that tree height,tree diameter at 1.3 m height,N content and Frankia quantity in inoculated trees increased by 6.6%～53.1%, 16.8%～45.9%,18.1%～40.2% and 277.4% respectively than those of uninoculated trees.Soil nutrients except K increased by 64.3%～249.9% compared with those of before afforestation.The inoculation effects could maintained to the 4th year but was much higher in the 2nd year than in the 1st,3rd and 4th year.The response to inoculation displayed distinct differences among sites and Frankia strains.