水土保持研究2013，Vol.20Issue(4)：44-48,5.
秸秆深还田两年对东北半干旱区土壤有机质、pH值及微团聚体的影响
Effects of Two Years of Stalk Deeply Returned to the Field on Soil Microaggregates and Soil Organic Matter and pH Value after in Semiarid Region of the Northeastern China
摘要
Abstract
A field experiment was conducted.Soil microaggregate and mechanical property was separated by pipette and sieve analysis,and soil organic matter,pH and soil micro-aggregate were measured.The effects of stalk deeply returned to the field after two years on oil organic matter,pH and soil microaggregate in semiarid region of the northeastern China.The Results indicate that stalk deeply returned to the field decreased the soil of pH.As the depth of soil layers increased,pH value increased gradually.The amount of soil organic matter and soil microaggregate degree were higher than the CK and DT treatments of stalk deeply returned to the field 3.4％～32.7％ and 16.4％～53.7％,respectively.Dispersion coefficient of soil was lower than the CK and DT treatments,12000 kg/ha treatment of stalk deeply returned to the field was the most significant.In summary,after two years of stalk deeply returned to the field could improve the amount of soil organic matter,decrease the soil of pH,improve the characteristics of particle composition of soil,positive effects on soil microaggregation degree.关键词
秸秆深还田/有机质/pH/土壤微团聚体Key words
stalk deeply returned to the field/ soil organic matter/ pH/ soil microaggregate分类
农业科技引用本文复制引用
闫洪亮,王胜楠,邹洪涛,马迎波,虞娜,张玉玲,黄毅,张玉龙..秸秆深还田两年对东北半干旱区土壤有机质、pH值及微团聚体的影响[J].水土保持研究,2013,20(4):44-48,5.基金项目
国家科技支撑计划子课题资助(2012BAD05B01,2011BAD09B02) （2012BAD05B01,2011BAD09B02）
农业部公益性行业专项(201303125,200903007) （201303125,200903007）
国家973项目(2011CB100502) （2011CB100502）
辽宁省科技攻关重大项目(2011213001) （2011213001）
