秸秆还田对白浆土养分含量的影响  

Effect of Straw Returning on Planosol Nutrient Content

作　　者：董守坤[1] 刘丽君[1] 马秀峰[1] 唐远征[1] 孙占峰[1] 马春梅[1] 龚振平[1] 

机构地区：[1]东北农业大学农学院,黑龙江哈尔滨150030

出　　处：《作物杂志》2011年第1期53-55,共3页Crops

基　　金：国家"十一五"科技支撑计划(2007BAD89B05);黑龙江省教育厅科研项目(10551032);东北农业大学科技人才启动基金(2009RC57)资助

摘　　要：秸秆还田可以减少环境污染,培肥土壤,是未来农业生产的发展趋势。本试验研究了不同秸秆还田方式及数量对白浆土养分含量的影响。结果表明,两年的玉米秸秆还田能够增加土壤有机质含量,秸秆还田量越大效果越明显,但对土壤全氮的影响不大;秸秆全量还田可以增加大豆生长后期的土壤全磷和全钾含量,而根茬还田对其影响较小。秸秆还田增加了土壤碱解氮含量;而对土壤有效磷含量影响不大;秸秆全量还田增加了土壤速效钾含量,而根茬还田对土壤速效钾含量没有表现明显影响。Straw returning could reduce environmental pollution and improve the fertility of soil.The effects of straw returning on the Planosol nutrient content was investigated in this experiment.The results showed that the organic matter content of soil increased when straw of maize was returned for two years,and the effect became more obvious as the crop-residue incorporation increased,while there was no significant influence on soil total nitrogen.Whole straw returning could increase the content of soil total P and K in later growth stage of soybean,while stubble remaining in field had little effect on them.Straw returning increased the content of available nitrogen,while it had little effect on the content of available phosphorus.Whole straw returning increased the content of available potassium,while stubble remaining in field had little effect on it.

关 键 词：秸秆还田 大豆 白浆土 土壤养分 

分 类 号：S158[农业科学—土壤学]