柑桔原产南亚和中亚,是亚热带常绿果树,以后逐渐北移引至陕南。近年又引种到关中。建国初期,长安县农民陈世新曾在宅旁播种红桔,现留一株,每年还有一定收获。1972年,周至县终南大庄寨村农民罗查田栽了一块70多棵树的柑桔园,1983年采桔1500多斤。现就关中引种柑桔的情况进行分析,希望指正。一、关中引种柑桔的情况1984年4月下旬,在周至县终南公社七一大队柑桔园调查的情况如下。1.自然概况。该园位于秦岭以北8公里的渭河南岸,为渭河一级阶地,海拔450米,地势平坦,果园仅5亩比周围高出3—5米,土壤为红油土,pH7—7.5,有机质含量0.5— Citrus origin South Asia and Central Asia, is a subtropical evergreen fruit tree, then gradually moved north to southern Shaanxi. In recent years, introduced to Guanzhong. In the early days of the founding of New China, Chen Shixin, a farmer in Chang’an County, sown red mandarin oranges near his house and now has a plant, with a certain harvest each year. In 1972, Zhouzhi County Zhongnan Dazhuang Village farmer Luo Zhatian planted a piece of citrus orchards of more than 70 trees in 1983 mining more than 1,500 kilograms of orange. Now Guanzhong citrus introduction of the situation analysis, I hope correct. First, the introduction of citrus Guanzhong situation In late April 1984, Zhouzhi County Zhongnong Commune Seventh Brigade citrus garden survey is as follows. A The park is located on the south bank of the Weihe River, 8 kilometers north of the Qinling Mountains. It is a grade terrace of the Weihe River with an elevation of 450 meters and a flat terrain. The orchard is only 5mu more than the surrounding area. The soil is red soil, pH7-7.5, organic matter content 0.5-