刘家站垦殖场地处丘陵红壤地区,全场有桔园面积近千亩。曾由于建园时标准低,基础差,加上红壤瘠薄,肥力低,特别是有机质缺乏,致使大部分柑桔园成为低产园。针对这个问题,1984年冬我们对低产柑桔园进行改造,主要抓了柑桔园套种以花生、肥田萝卜为主的两季绿肥。1984～1987年分别套种50、139、244、306亩,四年内共套种累计面积达739亩,效果良好。尽管柑桔总产量大幅度增加了,但单产仍较低。不过通过实践使我们认识到柑桔园套种绿肥作物后,主要除了增加有机质改良土壤外,它对增加桔园覆盖率,防止水土流失,改善桔园生态环境,促进桔树正常生长发育,提高柑桔产量起着重要作用。 Liujiaba reclamation site is located in the hilly red soil region, the audience has nearly 1,000 acres of orange orchard area. Once due to the low standard of construction garden, poor foundation, coupled with barren red soil, low fertility, especially the lack of organic matter, resulting in the majority of citrus orchards as low-yielding garden. In response to this issue, in the winter of 1984, we transformed the low-yield citrus orchards, mainly focusing on citrus orchard intercropping two-season green manure with peanut and fat radish. From 1984 to 1987, they were planted with 50,139,244,306 mu respectively, and the total area of ​​interplanting was up to 739 mu in four years and the effect was good. Despite the substantial increase in the total citrus output, yields are still low. However, through practice, we have realized that after citrus orchard intercropping with green manure crops, it mainly increases the coverage rate of orange orchard to prevent soil erosion, improves the ecological environment of orange garden, promotes the normal growth and development of orange trees, Orange production plays an important role.