不同灌水量对红枣果实生长及产量的影响

为探究不同灌水量对红枣坐果率、果实生长及产量的影响,以甘肃省民勤县当地7a生骏枣为试验材料,在砂管灌条件下设置3个不同灌水量(2 700、3 375和4 050 m3/hm2)和一个地表滴灌(4 050 m3 /hm2)对照进行大田试验.结果 表明:4 050 m3/hm2灌水量的坐果率和产量均达到最大值,分别为6.7...

Effect of Different Irrigation Quantity on Fruit Growth and Yield of Jujube

In order to explore effects of different irrigation amounts on fruit setting，fruit growth and yield of red jujubes，the 7-year-old jujube in Minqin was used as test material，and three different irrigation volumes（2 700，3 375，4 050 m3/hm2）were set under condition of sand pipe irrigation and a surface drip irrigation（4 050 m3/hm2）control field experiment.Results showed that fruit setting rate and yield of 4 050 m3/hm2 reached the maximum，which were 6.73% and 12 589.2 kg/hm2，respectively，which were significantly higher than other treatments.There were two obvious swelling peaks in longitudinal and transverse diameters of fruit，and in the first swelling peak，expansion rate of jujube fruit was much higher than the second one.Fruit setting rate，fruit expansion rate and yield all increased with increase of irrigation water.Under the same irrigation volume，indicators of sand tube irrigation were higher than surface drip irrigation.Combined with local environmental conditions，the irrigation volume of 4 050 m3/hm2 was suitable for growth of local jujube.