华南农业大学学报2017，Vol.38Issue(5)：43-49,7.DOI:10.7671/j.issn.1001-411X.2017.05.008
赤红壤坡地幼龄果园间作对土壤氮组分的影响
Effects of intercropping on nitrogen component in latosolic red soil of slope land in young orchard
摘要
Abstract
[Objective] To explore the effects of different intercropping patterns on nitrogen components of latosolic red soil of slope land in young orchard,and identify an optimal intercropping pattern that could improve soil nitrogen availability in orchard.[Method] A field experiment was carried out in Dimocarpus longan (D1) orchard for two seasons (in autumn of 2015 and spring of 2016) to investigate the effects of four planting patterns [D1 monoculture (CK),D1 intercropping with Arachis hypogaea (D1/Ah),D1 intercropping with Stylosanthes guianensis (D1/Sg) and D1 intercropping with Lolium perenne (D1/Lp)] on the contents of soil total nitrogen (TN),available nitrogen (AN),NO3--N,dissolved organic nitrogen (DON) and micrbial biomass nitrogen (MBN).[Result] Soil TN contents of D1/Ah and D1/Sg treatments and soil MBN contents of intercropping treatments were significantly higher than that of CK at the maturing stage ofA.hypogaea in two seasons.At the pegging stage ofA.hypogaea in two seasons,soil DON and AN contents of D1/Ah treatment were significantly higher than that of CK.NO3--N contents of Dl/Ah and D1/Sg treatments were significantly higher than that of CK,and enhanced by 64.4％ and 34.2％ respectively at the pegging stage ofA.hypogaea in 2016.Soil TN,DON and NO3--N contents had a significantly positive correlation with plant nitrogen content,but were negatively correlated with the carbon content and carbon/nitrogen ratio of plant.[Conclusion] D1/Ah and D1/Sg treatments could significantly improve soil nitrogen component contents,and D1/Ah treatment was better.关键词
赤红壤/幼龄果园/间作/氮组分Key words
latosolic red soil/young orchard/intercropping/nitrogen component分类
农业科技引用本文复制引用
张媛,章家恩,向慧敏,巩雅莉,罗颢,李登峰..赤红壤坡地幼龄果园间作对土壤氮组分的影响[J].华南农业大学学报,2017,38(5):43-49,7.基金项目
广东省科技计划项目(2015B090903077,2016A020210094) （2015B090903077,2016A020210094）
广州市科技计划项目(201604020062) （201604020062）
广东省现代农业产业技术体系创新团队建设项目(2016LM1100) （2016LM1100）
