大棚西瓜连作的土壤养分和盐分的动态变化初探  

Study on the nutrient contents and salinity dynamics of worked soil of continuous watermelon culture under plastic tunnels

作　　者：陆利民[1] 严志衡 姚春霞[2] 邱琴[1] 陆建忠[1] 徐益章[1] 

机构地区：[1]上海市浦东新区农业技术推广中心,上海201201 [2]华东师范大学地理信息科学系教育部重点实验室,上海200062

出　　处：《上海农业学报》2006年第1期113-115,共3页Acta Agriculturae Shanghai

基　　金：上海市丰收计划项目"西甜瓜设施栽培土壤连作障碍防治技术开发"(FS0205)部分内容

摘　　要：通过2年4茬设施栽培条件下的西瓜肥料试验,研究了土壤养分、盐分的动态变化趋势,分析了西瓜生长阶段中土壤速效态N、P、K的供应强度和西瓜植株吸收浓度的相关性,以及土壤盐分周期走向与施肥、灌溉的关系,提出了苗期避免盐分积累是西瓜种植成败的关键,及苗期盐分的临界指标。The experiments of two-year two-crop watermelon culture were carried out under plastic tunnels and different fertilization rates during 2003- 2004. The yearly trends of soil nutrients and salinity dynamics were studied, and the correlation between the intensity of readily available N, P and K supplies and the absorbed concentration of watermelon plants was analysed. The periodic change of soil salinity with fertilization and irrigation was also discussed. The investigation showed that success or failure in planting watermelon hinged on avoiding salt accumulation at seeding stage of watermelon. The critical salinity of worked soil at the seedling stage of watermelon was also put forward.

关 键 词：西瓜 设施栽培 土壤 养分 盐分 

分 类 号：S651.606[农业科学—果树学]