杭州市规模化设施蔬菜基地连作障碍调查与分析  

Investigation and Analysis of Continuous Cropping Obstacles in Large-scale Facility Vegetable Bases in Hangzhou

作　　者：王京文 李衍 沈建国 李丹 袁杭杰 楼玲 WANG Jingwen;LI Yan;SHEN Jianguo;LI Dan;YUAN Hangjie;LOU Ling(Hangzhou Agricultural Technology Extension Center,Hangzhou 310020,Zhejiang,China;Agriculture and Rural Bureau of Jiande City,Hangzhou 311600,Zhejiang,China;Service Station of Eco-agriculture and Plant Protection of Yuhang District,Hangzhou 310023,Zhejiang,China)

机构地区：[1]杭州市农业技术推广中心,杭州310020 [2]建德市农业农村局,杭州311600 [3]杭州市余杭区农业生态与植物保护服务站,杭州310023

出　　处：《农学学报》2024年第10期19-24,共6页Journal of Agriculture

基　　金：杭州市农业科技协作与创新攻关项目“蔬菜连作障碍治理技术研究与示范”(202209SX15)。

摘　　要：为了解杭州市规模化设施蔬菜基地连作障碍状况,选择20个代表性蔬菜基地,在对其调查的基础上采样分析了耕层土壤的理化性状。结果表明:基地平均种植年限13.75 a,连作现象较为普遍,连作障碍较为突出,作物平均减产15.0%,化肥施用量偏大;基地土壤退化严重,土壤pH≤5.5的样品占比55.0%,含盐量>0.2%的样品占比35.0%;土壤中有效磷和速效钾富集明显,平均值分别达到93.8 mg/kg和516 mg/kg。针对退化问题,提出了相应的防治对策。To understand the continuous cropping obstacles of large-scale vegetable bases in Hangzhou,20 representative vegetable bases were selected and the physical and chemical properties of topsoil from the bases were analyzed based on the investigation.The results showed that the average planting years of the base were 13.75 a,the phenomenon of continuous cropping was common,the obstacles of continuous cropping were prominent,the average crop yield reduced 15.0%,and the application amount of fertilizer was too large.Soil degradation was serious,and 55.0%of the samples was in pH≤5.5.Samples with salt content>0.2%accounted for 35.0%;the enrichment of available phosphorus and available potassium in soil was obvious,with average values of 93.8 mg/kg and 516 mg/kg,respectively.In view of the degradation problem,the corresponding prevention and control measures were put forward.

关 键 词：规模化设施蔬菜基地 连作障碍 土壤酸化 次生盐渍化 养分富集 

分 类 号：S154.3[农业科学—土壤学]