西安理工大学学报2016，Vol.32Issue(3)：295-301,337,8.DOI:10.19322/j.cnki.issn.1006-4710.2016.03.008
温室番茄基质栽培供液决策方法研究
Research on the decision method of supplying nutrient solution of tomatoes with substrate culture in greenhouse
摘要
Abstract
To research the decision method of supplying nutrient solution of tomatoes with sub-strate culture in greenhouse,using the substrate water content monitored by moisture sensor as decision index of the amount and time for supplying nutrient solution,three experiments are con-ducted,which set the threshold ranges of upper and lower limit of substrate water content in the each growth periods of tomatoes to supply solution,and set the substrate water capacity as upper limit and those as lower limits which the known thresholds of substrate water content and the substrate water contents by monitoring every 1 hour to supply solution with off-time and fixed timing.Appropriate decision method of supplying nutrient solution is determined,through com-paring effects of amount and time for supplying nutrient solution,available nutrient content,e-lectrical conductivity and pH in the substrate,plant growth,fruit quality and yield in the three experiments.The results show three points.The first,the amount and time for supplying nutri-ent solution can not meet the requirements of plants for nutrients under the condition of the dif-ferent threshold ranges of upper and lower limit of substrate water content in each growth period of tomatoes,so that it gets poorer plant growth,fruit quality and lower yield.The second, though the demand of plants for nutrients is met under the condition that the substrate water ca- <br> pacity and the known thresholds of substrate water content respectively as upper and lower lim-its,plant growth are affected by the bad root environments.The third,under the condition that the substrate water capacity and the substrate water contents by monitoring every 1 hour respec-tively as upper limit and lower limits,the demand of plants for nutrients are met,thus it gets the normal plant growth,better fruit quality and the higher yield.The third decision method can re-alize the efficient decision management of nutrient solution with substrate culture,according to the daily water demand regulation of tomatoes.关键词
基质栽培/营养液/决策方法/番茄Key words
substrate culture/nutrient solution/decision method/tomato分类
农业科技引用本文复制引用
张芳,张建丰,薛绪掌,王利春,李银坤,申亚宾..温室番茄基质栽培供液决策方法研究[J].西安理工大学学报,2016,32(3):295-301,337,8.基金项目
北京市自然科学基金资助项目（6142008）；国家863计划资助项目（2012AA101903-1）；北京市农林科学院科技创新能力建设专项资助项目 （）
