泗阳县林农复合经营对土壤理化性质的影响  

Effects of agroforestry on physical and chemical properties of soil in Siyang County

作　　者：严相进[1] 朱玲[2,3] 倪云 唐罗忠[2,3] Yan Xiangjin;Zhu Ling;Ni Yun;Tang Luozhong(Foresty Center of Siyang County,Jiangsu Province,Siyang 223700,China;Co-Innovation Center for the Sustainable Forestry in Southern China,Nanjing Forestry University,Nanjing 210037,China;College of Forestry,Nanjing Forestry University,Nanjing 210037,China)

机构地区：[1]江苏省泗阳县林业中心,江苏泗阳223700 [2]南京林业大学南方现代林业协同创新中心,江苏南京210037 [3]南京林业大学林学院,江苏南京210037

出　　处：《江苏林业科技》2018年第4期8-12,共5页Journal of Jiangsu Forestry Science & Technology

基　　金：江苏省林业三新工程项目"杨树干形调控修枝技术研究与示范推广"(LYSX[2016]48);国家重点研发计划课题"美洲黑杨工业资源材高培育技术研究"(2016YFD0600402);江苏高校优势学科建设工程资助项目(PAPD)

摘　　要：林农复合经营是一种重要的土地经营方式,合理的林农复合经营有利于提高土地生产力和经济效益。为了了解林农复合经营对土壤理化性质的影响状况,该研究对江苏省泗阳县的杨树(Populus×euramericana ‘Nanlin895’)+小麦、杨树+雪菜、杨树+油菜、杨树+草鸡4种杨农复合经营模式以及纯杨树林的土壤理化性质进行了调查研究。结果表明,与纯杨树林相比,杨农复合经营能在一定程度上改善土壤理化性质,但是不同复合经营模式之间存在一定差异,其中林下间作型杨农复合经营(杨树+小麦、杨树+雪菜、杨树+油菜)能有效降低土壤容重和p H值,提高土壤孔隙度和土壤有机质、水解氮、速效磷和速效钾含量;而林下养殖型杨农复合经营(杨树+草鸡)虽然也能显著提高土壤有机质、水解氮、速效磷和速效钾含量,但是会导致土壤容重和p H值升高,土壤孔隙度下降。Agroforestry is an important way of land management in the world. Reasonable management of agroforestry canimprove land productivity and economic efficiency. In order to understand the influence of agroforestry on the physical andchemical properties of soil, we investigated the soil physical and chemical properties of different management patterns inclu？ding poplar （Populus × euramericana ‘Nanlin 895’） ＋ wheat, poplar ＋ potherb mustard, poplar ＋ rape, poplar ＋ chickenand pure poplar forest in Siyang County, Jiangsu Province. The results showed that, agroforestry could improve the soilphysical and chemical properties compared with the pure poplar forest. However, the effects on the soil properties were different between different patterns of agroforestry. For example, the patterns of poplar ＋ wheat, poplar ＋ potherb mustard andpoplar ＋ rape could effectively reduce the soil bulk density and the pH value, but increase the soil porosity, soil organicmatter, hydrolytic nitrogen, available phosphorus and available potassium contents. However, the pattern of poplar ＋ chicken could obviously increase the soil bulk density and pH value, and reduce the soil porosity although it could significantlyimprove the soil organic matter, hydrolytic nitrogen, available phosphorus and available potassium contents.

关 键 词：林农复合经营 杨树 土壤 理化性质 泗阳县 

分 类 号：S151.95[农业科学—土壤学] S344.2[农业科学—农业基础科学]