红壤侵蚀荒坡地种植留兰香技术及效益分析

Technique of Planting Spearmint on Eroded Red Soil Slope Wasteland and Benefit Analysis

留兰香作为一种优良的水土保持经济植物，是我国南方红壤侵蚀荒坡地治理与开发的优良作物品种之一，有如下几方面的优势：①耐旱、耐瘠，适应性强；②辅以科学的栽培管理措施，生长快，覆盖密，覆盖时间长，蓄水效率达５０－３ ％ ，减沙效率达７１－５ ％ ，能有效地控制水土流失；③留兰香油可作调味香料，也可开发成系列清凉保健产品和高效低毒的植物杀虫、驱虫制剂，经济效益佳。总结了红壤侵蚀荒坡地种植留兰香的主要技术措施，并对其生态、经济效益进行了分析评价。

Spearmint — a fine economic plant for soil conservation — is one of the fine plant species for harness and exploitation of eroded red soil slope wasteland in southern China. It has following good characteristics: 1) It is arid resistant, infertile enduring and compatible. 2) Assisted with scientific cultivation and management measures, spearmint can effectively control soil loss with fast growth, thick coverage with long time, its water storage efficiency and silt reduction efficiency are 50.3% and 71.5% separately. 3) Spearmint oil can be used as spice, it can be used to produce freshener and low poison pesticide with high economic effect. The paper summarizes most technical measures for planting spearmint on eroded red soil slope wasteland, and analyzed its ecological and economic effects.