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在肯尼亚中部高地的淋溶土上 ,对树绿篱、草绿篱和树草绿篱等 3种生物绿篱进行了试验研究。分别对作物生长季节中试验区的土壤侵蚀量、干物质生物量和地形变化特征进行了调查和测试。树绿篱、树草绿篱、草绿篱和对照 (无绿篱 )各试验区累计平均土壤侵蚀量分别为 5 6、7 4、11 2和 10 9t/hm2 ;树绿篱、树草绿篱和草绿篱干物质生物量分别达到 2 980、9 2 4和 11 9t/ (hm2 ·a) ;地形测量表明 ,各绿篱试验区的梯田地形都有一个均一的变化过程 ,坡度降低 0 2 % ,但对照区坡度增加 0 2 %。该项研究对于开展复合农林业 ,保护土壤 ,发展可持续农业具有重要的指导意义。
Three hedgerows, hedgerows, grass hedgerows and hedgerows, were tested on leaching soil in the central highlands of Kenya. Soil erosion, dry matter biomass and topographic changes in the growing season were investigated and tested. The cumulative average soil erosion in the hedgerows, hedgerows, hedgerows and control plots (no hedgerows) was 56.74, 11.2 and 109t / hm2, respectively; hedgerows, hedgerows and hedgerows And the biomass reached 2 980, 9 2 4 and 11 9 t / (hm 2 · a), respectively. The topographic survey showed that there was a uniform change in terraced topography in each hedgerow test area, with a decrease of 0.2% in slope but an increase in slope in the control 0 2%. This research has important guiding significance for the development of agroforestry, soil protection and sustainable agriculture development.