果树生产者为了增加产量和降低成本,而增多果树的单位面积栽植株数。篱架栽培便可使每英亩栽植约360株。美国加利福尼亚州的文土腊郡于1965年开始进行柠檬的篱架栽培试验。用Prior里斯本柠檬为试材,以阿莱柠檬(Citrus macrophylla)为砧木,1965年定植,株距约3公尺,行距4.7公尺,排成东西方向栽植,每英亩290株。共作四个处理,每处理用两行树,每一行 Fruit tree producers increase the number of fruit trees per unit area in order to increase production and reduce costs. Hedge cultivation can plant about 360 plants per acre. Ventura County, California in the United States in 1965 began the limonosea cultivation test. Using the lemon of Le Lisboa as the sample material and Citrus macrophylla as the rootstock, the plant was planted in 1965 with a spacing of about 3 meters and a spacing of 4.7 meters. It was planted in the east-west direction with 290 plants per acre. A total of four processing, each dealing with two lines of trees, each line