玉米秸秆腐解液对幼苗根际土壤理化性质的影响  

Effects of Maize Stalk Decomposing Liquid on Soil Physical and Chemical Properties of Seedling Rhizosphere

作　　者：刘旋[1] 乔天长[1] 赵先龙[1] 张丽芳[1] 魏湜[1] 顾万荣[1] 焦健[1] 李晶[1] 

机构地区：[1]东北农业大学农学院农业部东北地区作物栽培科学观测实验站,哈尔滨150030

出　　处：《西北农业学报》2017年第3期376-383,共8页Acta Agriculturae Boreali-occidentalis Sinica

基　　金：国家科技支撑计划项目(2012BAD14B06);寒地作物品种改良与生理生态重点开放实验室项目(HDZW-008)~~

摘　　要：为了探究玉米秸秆腐解液对幼苗根际土壤理化性质的影响,选取‘郑单958’为供试材料,分析不同腐解时间(0、60、120、180d)和不同腐解质量浓度(0.125、0.25、0.5g/mL)下秸秆腐解液对幼苗(四叶、五叶、六叶期)根际土壤pH、电导率(EC值)、无机氮、有机质、速效磷、速效钾的影响。结果表明:在腐解180d、0.5g/mL质量浓度处理下土壤pH达最高,60d、120d,0.5g/mL质量浓度处理下土壤pH低于对照;在腐解120d、0.125g/mL质量浓度处理下土壤EC值达最高,在腐解120d、0.5g/mL质量浓度处理下土壤无机氮质量分数最高;幼苗四叶、五叶、六叶期均在腐解60d、0.125g/mL质量浓度处理下的土壤有机质质量分数达最高;土壤速效磷质量分数在60d、120d、180d腐解液处理下均随腐解液质量浓度增大而升高。在腐解120d、0.5g/mL质量浓度处理下土壤速效钾质量分数较高。因此,腐解时间不同的秸秆腐解液不同质量浓度均对土壤的理化性质产生影响,120d腐解时间的高质量浓度(0.5g/mL)秸秆腐解液对土壤养分环境影响最为显著。In order to explore the effects of maize stalk decomposing substance on soil physical and chemical properties of seedling rhizosphere,‘Zhengdan 958’ was used as test materials.The effects of maize stalk decomposing substance with different decomposing time （0,60,120,180 d） and different mass concentration （0.125,0.25,0.5 g/mL） on soil pH,EC values,inorganic nitrogen,organic matter,available phosphorus and potassium were analyzed in seedling seeding rhizosphere.The results showed that the soil pH reached the highest level under the treatment of mass concentration of 0.5 g/mL and decomposition 180 d.The soil pH was lower than control with mass concentration of 0.5 g/mL and decomposition 60 d and 120 d,respectively.The soil EC values reached the highest level with mass concentration of 0.125 g/mL and decomposed 120 d.The soil inorganic nitrogen reached the highest level with mass concentration of 0.5 g/mL and decomposed 120 d.The soil organic matter reached the highest level with the mass concentration of 0.125 g/mL after decomposed 60 d in 4,5,6 leaf stage of maize seedlings.The soil available phosphorus increased with increase of mass concentration after decomposition 60 d,120 d and 180 d.The soil available potassium reached the highest level with mass concentration of 0.5 g/mL after composition of 120 d.Therefore,the decomposition substance with different decomposition time and different mass concentrations had effect on soil physical and chemical properties of seedling rhizosphere,it was most significant effect of soil nutrient environment with mass concentration of 0.5 g/mL of ecomposed 120 d.

关 键 词：玉米 秸秆腐解液 土壤理化性质 土壤养分 

分 类 号：S513[农业科学—作物学]