不同灌水量对日光温室黄瓜需水规律和水分利用的影响

采用田间试验研究了不同灌水量在开花期、初瓜期、结瓜盛期期和结瓜末期等生育时期对黄瓜蒸腾量、产量和水分利用效率的影响,并通过黄瓜的需水规律提出实现高产高效的土壤水分对策。研究结果表明:在整个生育期,开花期灌水量控制在37.5～52.5mm、初瓜期灌水量控制在112.5mm左右、盛瓜期灌水量控制在367.5mm左右和结果末期灌水量控制在150mm左右,不仅可获得最高产量(14.560 2万kg/hm2),而且可以达到最大的水分利用效率(26.4kg/m3),实现高产高效的统一。

Effect of Different Irrigation Amount on Water Requirement Rule and Water Use Efficiency of Cucumber in Greenhouse

The experiment was conducted to study the effect of different irrigation amount on the Ts,yield and WUE of cucumber during 4 stages,including florescent stage,early-fruit stage,fruit stage and late-fruit stage.And the best irrigation amount arrangement was gained through the water requirement rule of cucumber.The results showed that when the irrigation amount was 37.5~52.5 mm in florescent stage,about 112.5 mm in early-fruit stage,about 367.5 mm in fruit stage and about 150 mm in late-fruit stage,not only the highest yield(145 602 kg/hm2)could be gained,but also the highest WUE(26.4 kg/m3)could be gained.