日光温室架式栽培番茄营养液供应频次的研究

摘要

Taking tomato varieties Qidali and Luomei as materials,the effects of different fertigation fre-quencies of nutrient solution,continuous fertigation,intermittent fertigation for 15 min /15 min and intermittent fertigation for 30 min /30 min,on growth and development,physiological metabolism,yield and quality and water and fertilizer use efficiency of tomato were studied using the closed circulating fluid for elevated pot cul-ture system in solar greenhouse.The results showed that compared with continuous fertigation,the plant growth,photosynthetic rate,root activity of intermittent fertigation for 15 min /15 min and 30 min /30 min sig-nificantly increased.The yield of Qidali increased by 6.33% and 5.53%,and that of Luomei increased by 10.27% and 7.96% respectively.Compared with intermittent fertigation for 15 min /15 min,the contents of soluble sugar,soluble protein and lycopene in treatment of intermittent fertigation for 30 min /30 min signifi-cantly improved.The indicators,plant growth,photosynthetic rate,yield and quality,showed that intermittent fertigation for 30 min /30 min was the optimum frequency for tomato cultured in pod.%在日光温室条件下，采用封闭式循环供液高架钵栽系统，以‘齐达利’和‘洛美’番茄为试材，研究了不同营养液供应频率（连续供液、间隔15 min 供液、间隔30 min 供液）对番茄生长发育、生理代谢、产量品质及水肥利用效率的影响。结果表明：与连续供液相比，间歇供液（间隔15 min 供液、间隔30 min 供液）番茄的长势、光合速率和根系活力显著增强；在间歇供液条件下，‘齐达利’的产量比连续供液分别增加6．33％和5．53％，‘洛美’的产量分别增加10．27％和7．96％；与间隔15 min 供液相比，间隔30 min 供液提高了果实中可溶性糖、可溶性蛋白和番茄红素含量，改善了果实品质。综合长势、光合特性、产量和品质等指标，间隔30 min 供液可作为番茄钵栽的适宜供液频次。