期刊论文

中文

作物研究

1001-5280

2016

30

3

282-287

10.16848/j.cnki.issn.1001-5280.2016.03.12

2014RS4002:湖南省科技计划 20134320110004:高等学校博士学科点专项科研基金 31100382:国家自然科学基金

本校为第一机构

为了探讨不同耕作方式对稻田土壤微生物量碳氮动态变化的影响，本研究就长期免耕和常规翻耕两种耕作方式，针对水稻不同生育期稻田0～20 cm 土层土壤微生物量碳氮含量变化进行了分析。结果表明，免耕处理土壤有机质显著增加了13.09％。翻耕处理水稻各生育期土壤微生物量碳氮含量基本高于免耕处理。翻耕处理土壤微生物量碳含量在水稻种植前和收割后两个时期分别比免耕高20.58％和16.79％，差异显著，其他时期差异不明显；翻耕处理土壤微生物量氮含量在水稻分蘖后期、孕穗期、黄熟期、收割后四个时期分别比免耕高31.70％、38.42％、41.82％和98.96％，差异显著。免耕处理土壤微生物量碳氮比率基本...

To study the dynamic effect of different tillage methods on the soil microbial biomass carbon( SMBC) and soil microbial biomass nitrogen( SMBN) in rice paddy,long-term no-tillage( NT) and conventional tillage( CT) methods were used to analyze the content change of soil microbial biomass carbon and nitrogen in different growth stages on rice. The results showed that the soil organic matter( SOM) content of the NT treatment increased 13. 09% compared with the CT; the SMBC and SMBN contents of the CT treatment was higher than that of the NT treatment. The SMBC content of the CT treatment,before t...