等高固氮植物篱值得大力推广

等高固氮植物篱营造费用仅为坡改梯的10%～17%,一般种植3年后可降低地表径流53%～74%,减少土壤流失97%～99%,并使土壤有机质增加20%～31%,全氮增加70%以上,作物产量增加30%～60%。常规耕作几年后坡地渐成梯地,成为群众的基本农田,可减少陡坡开垦并有效缓解农村"三料"俱缺的矛盾。在四川宁南等地的试验及推广应用效果良好,受到了国内外各界人士的好评,推广应用前景广阔。

Contour Nitrogen-Fixing Living Hedges Deserving to be Energetically Popularized

The cost for building contour nitrogen fixing living hedges is only 10% ～ 17% of that of turning slopes into terraces. Usually it can reduce surface runoff 53% ～ 74% and soil loss 97% ～ 99% and increase soil organic matter 20% ～ 31%, total nitrogen more than 70% and crop output 30% ～ 60% after 3 years' growing. After several years' common farming, the sloped lands gradually become terraced fields of farmland with high productivity. In that case, it can reduce cultivation on steep slopes and effectively alleviate the contradiction of shortage of fodder, fuel and fertilizer in rural areas. The results of test, extension and application conducted in Ningnan of Sichuan Province are fairly good and well received by the personages of various circles both at home and abroad. The prospects of extension and application are broad.