柑桔园套种及其效益分析

Interplanting in citrus plantation and its benefits.

红壤丘陵区柑桔园套种黑麦草和紫云英的研究表明,套种可提高光能利用率,减少水土流失,改善土壤肥力,提高柑桔产量和改善品质等;使春季土壤升温减慢,影响幼柑桔树春夏季生长。推广套种技术时应加强对套种柑桔园的栽培管理,处理好牧草利用、水土保持、土壤培肥与柑桔生产的关系,以提高生态及经济效益。

Effectiveness of interplanting rye grass (Lolium perenne) and milk vetch (As-tragalus sinicus L.) in citrus plantation in red earth hilly areas is studied. The results indicate that interplanting has a good effectiveness of enhancing efficiency of energy conversion, reduc-ing loss of water and soil, improving soil fertility, yield and fruit quality. However, interplanting would retard the increase of soil temperature in spring which slows down the growth of young trees in spring and summer. To popularize this technique, cultivation and management mea-sures must be strengthened and the relationships between utilization of the forage, conserva-tion of water and soil, fertilizing soil and citrus prodution should be well coordinated to en-hance ecological and economic benefits.