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采用生活污泥、牛粪和中药渣3种有机物料作为有机肥源改良新围垦滩涂土壤,对改良过程中黑麦草的生长及滩涂土壤理化性质的变化进行比较研究。结果表明:施用生活污泥、牛粪和中药渣均能改善新围垦滩涂土壤的理化性状,降低滩涂土壤pH及盐分含量,增加土壤有机质含量,改善滩涂土壤氮、磷养分的供应,且促进所种植物黑麦草的生长。在这一试验条件下,生活污泥用量75t·hm-2处理促进黑麦草生物量累积的效果最好;对黑麦草根系生长的促进效果由大到小依次为生活污泥、牛粪、中药渣。
Using organic sludge, cow dung and Chinese medicine residue as organic fertilizer sources to improve the newly reclaimed tidal flat soil, the growth of ryegrass and the change of physical and chemical properties of tidal flat soil were comparatively studied. The results showed that the application of domestic sludge, cow dung and Chinese medicine residue could improve the physical and chemical properties of the newly reclaimed tidal flat, reduce the pH and salt content of the tidal flat, increase the content of soil organic matter, and improve the supply of nitrogen and phosphorus nutrients in the tidal flat. Plant Ryegrass Growth. Under this test condition, the effect of 75t · hm-2 of domestic sludge on the accumulation of ryegrass biomass was the best, and the promotion effect on the growth of ryegrass was descending order of domestic sludge, cow dung, traditional Chinese medicine Slag.