不同酸性改良措施对山核桃林地土壤pH和主要养分的影响  

Effect of Different Acid Modification Measures on Soil pH and Main Nutrients in Carya cathayensis Forest Land

作　　者：徐永青 陈丽华 袁紫倩 赵伟明 董建华 李皓 胡俊靖 XU Yongqing;CHEN Lihua;YUAN Ziqian;ZHAO Weiming;DONG Jianhua;LI Hao;HU Junjing(Hangzhou Lin′an District Jinnan Street Regional Development Office,Zhejiang Hangzhou 311300;Hangzhou Forestry and wetland Academy,Zhejiang Hangzhou 310022)

机构地区：[1]杭州市临安区锦南街道区域发展办公室,浙江杭州311300 [2]杭州市林业和湿地科学研究院,浙江杭州310022

出　　处：《林业科技》2024年第2期15-18,共4页Forestry Science & Technology

基　　金：杭州市农业与社会发展主动设计项目“山核桃干腐病灾变机理与综合防控技术研究示范”(20172015A01);杭州市农业科研自主申报项目“酸胁迫对不同砧木山核桃苗生长的影响”(20191203B61)。

摘　　要：为明确不同酸性改良措施对山核桃林地土壤pH和有效养分的影响,采用三因素三水平的大田试验研究了改良物料种类和施用量对酸化土壤pH和主要养分的影响效应。结果表明:山核桃林地经过酸性改良后,林地土壤的pH、碱解氮、有效磷和速效钾含量分别提高了18.3%~51.63%、17.91%~53.26%、243.01%~466.56%和81.56%~203.14%。影响土壤pH和碱解氮含量的因素次序为石灰>黄腐酸钾>钙镁磷肥,影响土壤有效磷含量的因素次序为钙镁磷肥>石灰>黄腐酸钾,而影响土壤速效钾含量的因素次序为黄腐酸钾>钙镁磷肥>石灰。综合施用效果分析,在酸化山核桃林地施用石灰7.5 kg/株+钙镁磷肥4 kg/株+黄腐酸钾8 kg/株,土壤改良效果较好。In order to clarify the effect of different acid improvement measures on the soil pH and available nutrients in Carya cathayensis forests,the three-factor three-level field experiment was used to study the effects of the types and application rates of the improved materials on the acidified soil pH and main nutrients.The results showed that the pH,alkali-hydrolyzable nitrogen,available phosphorus and rapidly available potassium content after acid improvement in Carya cathayensis forest land increased by 18.3%-51.63%,17.91%-53.26%,243.01%-466.56%and 81.56%-203.14.The order of factors affecting soil pH and alkali-hydrolyzable nitrogen content is lime>fulvic acid potassium>calcium magnesium phosphate,the order of factors affecting soil available phosphorus content is calcium magnesium phosphate>lime>fulvic acid potassium,and the order of factors affecting soil rapidly available potassium content is fulvic acid potassium>calcium magnesium phosphate>lime.Comprehensive analysis of the effect of application,the application of lime 7.5 kg/plant+calcium-magnesium phosphate 4 kg/plant+fulvic acid potassium 8 kg/plant in acidified Carya cathayensis forest land has a better improvement effect.

关 键 词：山核桃 酸性改良 pH 养分 

分 类 号：S513[农业科学—作物学] S156.2S664.1