灌溉方式对桃光合特性及结果的影响

为了探讨果树节水灌溉的新途径,以安农水蜜和早久保桃为材料,研究了不同灌溉方式对桃光合特性和结果的影响。结果表明,采用交替灌溉和常规灌溉的桃树较未灌水的桃树有较高的光合速率、蒸腾速率。交替灌溉的桃树的光合速率和蒸腾速率低于常规灌溉,但交替灌溉桃树比常规灌溉有较高的蒸腾效率。常规灌溉和交替灌溉的桃产量和单果重显著高于对照,处理间果实可溶性固形物含量未达到显著差异。交替灌溉与常规灌溉的桃树在产量、单果重、可溶性固形物含量方面无显著差异,交替灌溉的桃树的农田总供水利用效率和灌溉水利用效率显著高于常规灌溉。交替灌溉在桃树上是一种可行的节水灌溉措施。

Effects of Irrigation Methods on Photosynthetic Characteristics and Fruiting of Peach Trees

Peach cultivars Annongshuimi and Dajiubao were used for studying the effects of different irrigation methods on the photosynthetic characteristics and fruiting.Results showed that the rates of transpiration and photosynthesis in alternative irrigation(AI) and conventional irrigation(CI) were higher than those in no irrigation(ck).While the rates of transpiration and photosynthesis in AI was lower than that in CI,but the transpiration efficiency in AI was higher than that in CI.The yield and the average fruit weight(AFW) of CI and AI were significantly higher than those of ck.There was no obvious difference in fruit yield,AFW,SSC between AI and CI.Agricultural water use efficiency(WUEa) and irrigated water use efficiency(WUEi) in AI were higher than those in CI,showing that AI was a practical water-saving method in peach culture.