不同灌溉上限对温室黄瓜初花期生长动态、产量及品质的影响

Effect of different irrigation maximums on growth dynamics,yield and quality of greenhouse cucumber during initial bloom stage

对不同栽培季节、不同土壤灌溉上限处理的温室黄瓜初花期的生长发育动态、产量、品质及水分利用效率进行了研究。结果表明,90%田间持水量灌溉上限处理较为理想,相比100%田间持水量灌溉上限处理而言,秋茬和春茬茎粗分别增加0.03和0.05cm,而根冠比差异不显著;根瓜节位分别降低1.39和0.69节;根瓜还原糖含量、可溶性总糖含量、Vc含量、可溶性蛋白质含量分别增加11.8g/kg,13.2g/kg,10.0mg/kg,0.13g/kg和10.3g/kg,4.5g/kg,24.9mg/kg,0.13g/kg;前期产量分别增加9.09%和7.77%;水分利用效率分别提高26.14%和22.72%。说明90%田间持水量为黄瓜初花期较适宜的节水灌溉上限指标。

<Abstrcat>Growth dynamics,yield,fruit quality and water use efficiency of greenhouse cucumber were studied under the different soil irrigation maximums in different seasons during initial bloom stage.The results showed:the treatment with irrigation maximum of 90% field water capacity is more reasonable,and under this treatment,stems in spring and autumn was thicker by 0.03 cm and 0.05 cm;first fruit positions got lower by 1.39 nodes and 0.69 nodes;contents of reductive sugar,soluble sugar,Vitamin C,soluble protein increased by 11.8 g/kg,13.2 g/kg,10.0 mg/kg,0.13 g/kg and 10.3 g/kg,4.5 g/kg,24.9 mg/kg,(0.13) g/kg respectively;prophase yield increased by 9.09% and 7.77%;water use efficiency increased by (26.14%) and 22.72% respectively in autumn and spring than the treatment with irrigation maximum of 100% field water capacity.So the treatment with 90% field water capacity is the more suitable soil irrigation maximum index.