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采用营造大叶相思水土保持林和种植荔枝、龙眼、杨梅等果树的措施治理严重退化赤红壤,对不同治理措施及对照的土壤抗蚀性研究,结果表明:采用不同生物措施治理后土壤抗蚀性大小顺序为:27年生杨梅(T23);6年生大叶相思(T12)、28年生的荔枝(T21)、龙眼(T22)和6年生荔枝(T11)。采用受蚀性指数EVA、土壤有机质、结构体破坏率、大于1mm水稳性团粒含量以及侵蚀率,能较好地表征赤红壤抗蚀性。在果园中引进以豆科为主植被覆盖地表,是提高严重退化赤红壤治理与合理开发综合效益重要措施之一。
The measures of soil and water conservation forests such as Acacia crassicarpa and cultivation of fruit trees such as litchi, longan and red bayberry were used to control the seriously degraded red soil. The soil erosion resistance of different control measures and control were studied. The results showed that: The order of sex was 27-year-old bayberry (T23), 6-year-old tree (T12), 28 year old litchi (T21), longan (T22) and 6 year old litchi (T11). Corrosion resistance of latosolic red soils can be better characterized by using EVA, soil organic matter, structure destruction rate, water stable aggregate content> 1mm and erosion rate. The introduction of legume-based vegetation cover in the orchard is one of the important measures to improve the management of severely degraded red soil and to develop the comprehensive benefits reasonably.