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.
出处
《上海农业学报》
CSCD
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
关键词
西瓜
设施栽培
土壤
养分
盐分
Watermelon
Protected culture
Soil
Nutrient
Salinity
