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目的评价云南省高原山区抑螺防病林农林复合模式的综合效果。方法选择云南省洱源县“兴林抑螺综合试验示范区”三营自然村,在核桃抑螺防病林设林下间种苜蓿、青菜、蚕豆、大蒜、莴苣、芹菜、大葱、小麦各实验组,无间种为对照组。监测各组林分生长、钉螺变化情况,调查农户短期经济收入,分析综合效益。结果抑螺防病林进行农林复合后,林分生长好于单一林分;林下间作苜蓿组活螺框出现率为3.33%,活螺密度0.04只/0.1 m2,两者下降率均为50.00%,其他各组未查到钉螺;实验组与对照比较,可使农民增收900～6 800元(/667 m2年)。结论云南高原山区核桃抑螺防病林下间作具有明显的抑螺效果,可产生良好的经济和生态效益。
Objective To evaluate the comprehensive effects of Agroforestry-Preventive Forestry and Agroforestry models in mountainous plateau of Yunnan Province. Methods Eighty-four species of alfalfa, green vegetables, broad beans, garlic, lettuce, celery, green onions and wheat were planted in the Eryuanlinximin Comprehensive Experimental Demonstration Area of Yunnan Province. The experimental groups, all kinds of non-control group. Monitoring growth of each group, snail changes, survey of short-term economic income of farmers, analysis of comprehensive benefits. Results The results showed that the stand growth was better than monoculture stand in the control group. The incidence rate of living screw snails was 3.33%, and the live screw density was 0.04 /0.1 m2. The decreasing rate of both was 50.00 %, The other groups were not found snails; experimental group compared with the control, farmers can increase income 900 ~ 6 800 yuan (/ 667 m2 years). Conclusion The intercropping of walnut snail for preventing and controlling forest diseases in the mountainous areas of Yunnan Plateau has obvious effect of controlling snail and can produce good economic and ecological benefits.