A variety of date（Ziziphus mauritiana Lamk） in greenhouse in Beijing was used as trial materials to study the effects of girdling,pinching,root-cutting,fertilization on fruit setting and growth.The results showed that girdling improved the fruit set rate of green jujube and both girdle trunk and the first branch was the best.The root distribution of green jujube was relatively shallow,mainly concentrated in 0~20cm soil layer.Root cutting in succession also improved the fruit set effectively.The optimization ratio for N,P and K fertilizers was N:P:K≈3:1:3.