不同基质含水量下盆栽番茄蒸腾量、鲜物质积累量及果实产量的差异  

Difference of Transpiration,Fresh Matter Accumulation and Fruit Yield for Potted Tomato Under Moisture Content of Medium

作　　者：李霞[1,2] 解迎革[2] 薛绪掌[1] 王国栋[2] 李邵[1,3] 陈菲[1] 

机构地区：[1]国家农业信息化工程技术研究中心,北京100097 [2]西北农林科技大学理学院,陕西杨凌712100 [3]扬州大学江苏省作物遗传生理重点实验室,江苏扬州225009

出　　处：《园艺学报》2010年第5期805-810,共6页Acta Horticulturae Sinica

基　　金：北京市农业科技示范推广项目;‘十一五’国家科技支撑计划项目(2007BAD33B01)

摘　　要：采用负水头灌溉装置,设置了10、30、50和70hPa不同供水吸力,研究其对温室盆栽番茄蒸腾量、鲜物质积累及相关生理指标的影响。结果表明:负水头盆栽装置实现了对基质含水量的精确控制,10、30、50和70hPa吸力处理下盆栽基质含水量分别稳定在88%、76%、63%和57%。在试验不同时期,盆栽番茄的日蒸腾量受基质含水量影响的表现不同;盆栽番茄的累积日蒸腾量最终表现为:10hPa处理>30hPa处理>70hPa处理>50hPa处理。基质水分处理引起盆栽番茄物质积累的差异非常显著,30hPa吸力下的鲜物质积累量最大,10和50hPa的次之,70hPa的最小。基质水分处理对盆栽番茄的产量、总蒸腾耗水量和作物水分生产率均有极显著影响。在30hPa供水吸力下的产量、鲜物质积累量最高,该供水吸力最有利于盆栽番茄生长。The effect of moisture content of medium on transpiration,fresh matter accumulation and related physiological indexes for potted tomato in greenhouse were studied through setting water supply tension at 10,30,50 and 70 hPa using negative pressure pot device.The results indicate：The moisture content of medium can be accurately controlled and maintained by the negative pressure pot device,moisture contents of medium are 88%,76%,63% and 57% at water supply tension 10,30,50 and 70 hPa correspondingly.In different experimental stages,influence of moisture content of medium on daily transpiration is different.Accumulative daily transpiration of potted tomato is as following：10 hPa treatment〉30 hPa treatment〉70 hPa treatment〉50 hPa treatment.The effect of medium moisture content on fresh matter accumulation is the most significant at 30 hPa,followed by 10 and 50 hPa and the least is at 70 hPa.The effect of water supply tension on yield,water consumption and crop water productivity are extremely significant.30 hPa is the most favorable water supply tension for potted tomato in greenhouse because of the maximum yield and the fresh matter accumulation.

关 键 词：番茄 负水头灌溉 供水吸力 蒸腾 鲜物质积累 作物水分生产率 

分 类 号：S641.2[农业科学—蔬菜学]