提高沿海赤红壤旱地土壤有机质的几种途径

沿海丘陵旱地水土流失严重,土壤有机质含量极低,如何提高土壤有机质含量是当前农业生产管理上的一个重大问题.通过莆田忠门赤红壤旱地3a 的试验及调查,提出如下提高土壤有机质的途径:(1)解决群众的生活能源问题;(2)就地广辟有机肥源以增施有机肥,如推广种植绿肥,建立多年生绿肥基地,旱地果园间套种禾本科与豆科绿肥,发展养殖业累积农家肥等;(3)推广适宜当地条件的轮套作制度及相应的稿秆回田的施肥管理措施,以提高土壤年生物产量和提高土壤有机质.

Some Ways for Raising Soil Organic Matter in the Dryland of Coastal Lateritic Red Earth

The water and soil loss was severe and the contents of organic matter were very low in the coast- al hill dryland.It was an important problem for the present agricultural productive management how to raise the contents of organic matter in the dryland of lateritic red earth.The results from three-year experiment and investigation in Zhongmen,Putain were as follows:(1)In order to raise the contents of organic matter in the coastal hill dryland the living energy sources of the masses should be settled first.(2)The following measurements to develop and add organic fertilizer on the spot should be encouraged and applicated,such as planting leguminous green manure,establishing the base of perennial green manure,intercropping and under-crop sowing green manure in the orchard dryland and developing animal husbandry to increase ani- mal manure,etc.(3)The rotation and under-crop sowing systems which were suitable on the spot and ap- propriate fertilizing and management measures to apply the crop straws as fertilizer into the field should be extended so that the yearly biomass,and the contents of organic matter in the soil could be increased.