摘要
为了进一步研究通过种植水稻对改良盐碱土的贡献,不同种植年限的改良效果及改良后的盐碱土化学生物特性的变化,本研究通过对未改良及用种稻法改良不同年限后的盐碱土为材料,通过对土样不同剖面pH值、可溶性盐总量及微生物数量3个指标变化的分析,明确了改良不同年限后土壤质量的变化趋势。结果表明,土壤pH值、可溶性盐总量随改良年限增加而逐渐降低,微生物数量变化的总体趋势逐渐升高。由此可知,种稻改良法使土壤质量显著提升,且随改良年限的增加,土壤性质向利于植物生长的方面发展,对苏打盐碱土的利用及提高产量有重要意义。
In order to further study the positive effect of planting rice in different years to saline-alkali soil and the biochemical characteristic change of the improving soil.With the contradictions between population growth and declining availability of land,improving use of saline-alkali soil becomes a hot issue in the sustainable use of world resources.In this study,the author used unimproved and improved saline-alkali soil through different years with rice method as material,through analysis of pH value and total soluble salts and microorganisms of different profiles,defined the trends in soil quality through different years of improvement.The results showed that pH value and total soluble salts decreased gradually,but microorganisms were increasing with years.The soil quality improved significantly with rice method.After improved years,plant growth could benefit from soil properties,which is important for the use of sodic-soil and yield elevation.
出处
《中国农学通报》
CSCD
北大核心
2011年第12期130-133,共4页
Chinese Agricultural Science Bulletin
基金
公益性行业(农业)科研专项经费项目"东北盐碱地治碱排盐农业高效利用模式研究与示范"(200903001)
吉林省科技厅2009年重大项目
关键词
盐碱土
改良
PH值
可溶盐含量
微生物数量
saline-alkali soil
improvement
pH value
soluble salts
microorganisms