Preliminary Study of Fertilization on Camellia grijsii

Camellia grijsii is a species of oil tea camellia which produces healthy edible oil.Because of the rare distribution and low yield,fertilization is needed to research for increasing the oil yield.A fertilizer trial in 1994 was conducted on a eight-year-old stand in Fuyang,Zhejiang.The soil is acid red earth in hilly area.9 treatments according to L9(34) with a check were designed.Siginificant responses of fertilization occured in 1995,1996, all the fertilizing treatments increased the fruit yield up to 52%～183% compared with the CK.The oil output was increased from 168 kg/hm2of CK to 255～475.5 kg/hm2of the fertilized treatments per year.The reasonable rate of application were N34.5、P56.3 and K90 kg/hm2.Fertilization increased significantly the quantity of bearing fruit per plant.The mean weight per fruit was effected by the quantity of bearing fruit per plant and N、K fertilizers,low medium N and high K levels of application enhanced the mean weight per fruit,high N made the mean fruit weight a little lower.