土壤与作物2018，Vol.7Issue(2)：222-228,7.DOI:10.11689/j.issn.2095-2961.2018.02.015
长期单施有机肥黑土大豆产量和土壤理化性质演变特征
Variation characteristics of soybean yield and soil physicochemical properties after long-term organic fertilizer application in black soil
摘要
Abstract
Based on a long-term experiment during 1979-2017 in black soil of northeast China , the objective of this study is to explore variation characteristics of soybean yield and soil physicochemical properties under long -term fertilization, and evaluate the feasibility of organic fertilizer substitution to chemical fertilizer in soybean cultivation .The experiment consisted of three treatments:chemical fer-tilizer (NPK, conventional application rates), horse manure (M), and 200％ of the M (M2) .The results showed that: (1) long-term application of organic fertilizer did not reduce soybean yield .(2) Compared with NPK treatment , long-term organic fertilizer application (M and M2) increased the average content of soil organic matter by 5.7％and 4.5％, respectively.There was no signifi-cant decrease in the content of alkali-hydrolyzale nitrogen and available potassium with organic fertilizer application .The content of soil available phosphorus in treatments M and M 2 was significantly lower than NPK treatment , which reduced the environmental risk of soil phosphorus.The soil pH change in treatments M and M 2 was stable, thus the soil acidification could be prevented .(3) In the treat-ment of manure application alone , the soil bulk density and the total soil porosity in 0-20 cm soil layers decreased by 5.9％-7.5％and 7.0％-8.9％, respectively.(4) Under long-term application of organic fertilizer in black soil , the nutrient supply capacity of organic manure was strong.Application of organic fertilizer could maintain soil acid-base balance and improve soil structure .In summa-tion, it was feasible to replace chemical fertilizer with organic fertilizer in soybean cultivation , but the organic fertilizer resources and rates should be considered in different ecological areas of black soil .关键词
有机肥/产量/理化性质/黑土Key words
organic fertilizer/yield/physicochemical properties/black soil分类
农业科技引用本文复制引用
郝小雨,马星竹,周宝库..长期单施有机肥黑土大豆产量和土壤理化性质演变特征[J].土壤与作物,2018,7(2):222-228,7.基金项目
国家重点研发计划"粮食丰产增效科技创新"重点专项(2017YFD0300503-02) （2017YFD0300503-02）
国家科技支撑计划(2013BAD07B01,2013BAD11B03) （2013BAD07B01,2013BAD11B03）
黑龙江省农业科学院院级科研项目(2017JS05). （2017JS05）
