Influences of sod culture on the soil water content,effect of soil nutrients,fruit yield and quality in citrus orchard

The influences of sod culture on the soil water content,effect of soil nutrients,fruit yield and quality in citrus orchard were studied.The results show that the average value of soil water content in planting grass plot is increased compared with that of the clean cultivation plot between July and November.At the early stage of sod culture,the effective contents of soil N,P,Ca,Mg,Mn,Cu and Zn are decreased in sod plot.However,after 2-years sod culture,the effective contents of soil N,K,Fe and Zn in sod plot are increased significantly compared with those of the check plot.The fruit yield and the content of soluble solid state material of the fruit are increased,while the citrus acid content of the fruit is decreased in planting grass plot.The better effects are in planting bahia grass plot.