灌水量对日光温室黄瓜灌溉水分配的影响

Effects of Irrigation on Water Distribution of Cucumber in Solar Greenhouse

以津育5号黄瓜(Cucumis sativusL)为试材,研究基于经验灌溉量的不同灌水量处理对日光温室黄瓜灌溉水分配的影响。结果表明,灌水量减少有利于减少水分深层渗漏、土面蒸发及土壤储水量,但对植株蒸腾量影响不显著。灌水量减少并没有降低黄瓜产量,反而有增产趋势,下浮25%和下浮50%分别比常规灌溉增产10.5%和15.4%,水分利用效率提高31.7%和71.4%,这一结果表明目前农民经验灌水量远远超过黄瓜的需水量。

Jinyu No.5（Cucumis sativus L） was used to study the effects of irrigation on water distribution and water use efficiency（WUE） of cucumber in solar greenhouse.Results revealed that water drainage,evaporation and soil water storage decreased with the decline of irrigation,but transpiration was no significant difference.Cucumber yield did not decrease but increased with the decrease of irrigation.Compared to conventional practice,irrigation falling 25% and 50% increased yield by 10.5% and 15.4%,and increased WUE by 31.7% and 71.4%,respectively.This result revealed that empirical irrigation was more than cucumber water requirement.