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在浙江省金华地区新垦植的红壤幼龄桔园及盛产成龄桔园进行了间作试验和调查研究。结果表明，幼龄桔园间作黑麦草或紫云英，能提高光能利用率，具有延缓秋冬土壤降温和春季土壤升温、减小土壤日温差幅度和冬季保暖、降低水土流失量等生态效应，但对夏梢生长具有不良的影响；成龄桔园长期间作紫云英也具有提高光能利用率，维持较高的肥料养分效率，明显改善土壤肥力，提高产量和改善柑桔外观品质等多种效益。桔园间作牧草应结合柑桔生产的要求，抓住适时拌肥播种、及时收割施肥和适时适量归还土壤３个管理技术要点。
An intercropping experiment and investigation were conducted on young orange orchards and mature orange orchard in newly reclaimed red soil in Jinhua, Zhejiang Province. The results showed that the young orchard intercropping with ryegrass or Astragalus sinicis could improve the utilization of light energy, which could delay the ecological effects of autumn and winter soil temperature reduction and spring soil temperature, reduce the range of soil temperature difference and winter warmth and reduce soil erosion, But had a bad effect on the growth of summer shoots. The age-old orange oryzium also had the advantages of increasing the light energy utilization rate, maintaining the high fertilizer and nutrient efficiency, obviously improving the soil fertility, increasing the yield and improving the appearance quality of citrus Benefit. Orange grassland between the forage should be combined with the requirements of citrus production, seize timely sowing fertilizer, timely fertilization and timely and appropriate return of soil three management techniques.