【摘要】 为了探讨西北旱区葡萄节水优质高效灌溉模式,于2004~2006年在甘肃河西走廊石羊河流域干旱荒漠绿洲区进行了田间试验,研究了根系分区交替滴灌、固定部分根区滴灌和常规滴灌三种灌溉模式对鲜食葡萄产量、品质和水分利用效率的影响。研究结果表明,根系分区交替灌溉灌水量较常规滴灌减少1/2,其产量未有显著下降,而且显著提高了浆果V c含量,使果酸含量降低,可溶性固形物含量显著提高,成熟度明显改善。根系分区交替灌溉的水分利用效率较常规滴灌提高了37.36%。采用根系分区交替灌溉可以达到大量节水、提高葡萄品质和成熟度而不明显降低产量的目的,可以作为西北旱区果园有效的节水优质高效灌溉模式。更多还原

【Abstract】 The objective of this study is to explore a new high-quality efficient irrigation pattern in arid areas of northwest China.Field experiment was conducted in the oasis region of Shiyang River basin,Gansu Province in 2004~2006 to evaluate the effects of different partial root-zone irrigation patterns,i.e,alternate partial root-zone drip irrigation(ADI),fixed partial rootzone drip irrigation(FDI) and conventional drip irrigation(CDI) on table grape(Vitis vinifera L.cv Rizamat) yield,quality and water use efficiency(WUE).The results showed that ADI saved half irrigation water with no significant yield reduction.ADI had amost the same fruit yield and higher total soluble solids concentration than control but with redder colour and earlier maturity,lower titrated acid and much higher vitamin C content.Furthermore,ADI plants had increased water use efficiency by 36.59% as compared to control plants.Advancement in fruit maturity and enhancement of quality could be achieved without detrimental effect on fruit yield by application of ADI.This research suggests that ADI has the potential for use in orchard as a high-quality efficient irrigation pattern in arid areas with limited water in northwest China.更多还原