Terracing of cropland in low rainfall areas of Machakos District, Kenya.

摘要: Abstract Expansion of cropping in the semi-arid and arid zones Machakos District is handicapped by soil erosion loss water as run-off. The predominance annual crops system planting twice a year due to bimodal rainfall pattern emphasize importance terracing for conservation. paper makes proposals design terraces retain method given calculating depth storage required. Terrace banks should be raised periodically maintain adequate capacity which would otherwise reduced sedimentation. Provided this done land will eventually become benched. Data on minimum infiltration rates are needed apply can obtained from simulator studies. likely most successful where levelling carefully slopes less than 15%.