水旱轮作改良利用潜育化水稻土的研究

潜育化水稻土存在渍、冷、烂、闭（气）、毒及缺素等障碍因素，采取水旱轮作是改良利用潜育化水稻土极其重要的措施．研究表明，水旱轮作可以改善土壤通气透水性能，提高氧化还原电位，减少还原物质，增加土壤微生物数量及提高其活性，增加土壤速效养分，促进作物生长发育，提高作物产量，并能提高土地利用率，获得全年农业增产增收增值．

Effects of Rice-Xerophyte Rotation on Amelioration of Paddy Soil

It is reported that waterflood, cool,mashed structure, poor air-permeability, accumulated poison, nutrient deficiency etc.,are among the obstructive factors of gleyed paddy soil, and rice-xerophyte rotation is one of the efficient measures for its improvement. In this study, by introducing rice-xerophyte rotation to amelioate gleyed paddy soil, it was showed that the rotation could improve soil permeability, raise soil Eh, reduce soil reduction matter, increase microbiomass and microbial activity, and enrich available nutrients. Therefore, crops produced higher yields due to growing in a favorable soil condition and farmer's annual benefit got raised because of more intensive land use.