葛藤与桑树3种种植模式的水土保持效果

Conservation of Water and Soil Under Three Cropping Patterns of Kudzu and Mulberry

为探索贵州喀斯特山区石漠化治理与草地生态畜牧业协调发展的新途径,在贵州省赫章县采用不同种植模式研究葛藤与桑树治理石漠化的效果。结果表明:通过对植被覆盖度、鲜叶产量、土壤抗蚀性、土壤孔隙度、田间最大持水量和土壤渗透系数等11个指标进行模糊综合评分,各处理综合得分依次为葛藤(密度为2 667株/667m2,0.779 2)>葛藤+桑树(密度为2 667株/667m2,0.718 4)>桑树(密度为2 667株/667m2,0.590 7)>葛藤(密度为667株/667m2,0.352 8)>葛藤+桑树(密度为667株/667m2,0.338 5)>桑树(密度为667株/667m2,0.284 1)>葛藤(密度为296株/667m2,0.265 6)>葛藤+桑树(密度为296株/667m2,0.257 8)>桑树(密度为296株/667m2,0.212 1)。结论:石漠化治理应以单独种植葛藤(密度为2667株/667m2)为主,以葛藤+桑树(密度为2 667株/667m2)的种植模式为辅。

In order to explore a new harmonious development path of stony desertification management and ecological animal husbandry in Guizhou karst mountainous area,the governance effects of kudzu and mulberry on stony desertification were studied by using different cropping patterns in Hezhang County of Guizhou Province.Results：the comprehensive scores followed the sequence of kudzu （2 6 6 7 plants/6 6 7 m2,0.779 2）〉kudzu＋mulberry（2 667 plants/667 m2,0.718 4）〉mulberry（2 667 plants/667 m2, 0.590 7）〉kudzu （667 plants/667 m2,0.352 8）〉kudzu＋mulberry （667 plants/667 m2,0.338 5）〉mulberry（667 plants/666.7 m2 ,0.284 1）〉kudzu （296 plants/667 m2 ,0.265 6）〉kudzu＋mulberry （296 plants/667 m2 ,0.257 8）〉mulberry（296 plants/667 m2 ,0.2121）.Conclusion：The stony desertification management should be dominated by planting kudzu（2 667 plants/667 m2 ）and supplemented by planting kudzu＋mulberry（2 6 6 7 plants/6 6 7 m2 ）.