亏水灌溉对开花坐果期梨枣树生长的影响

Effcets of deficit irrigation on growth of pear-jujube treein flowering to fruit-setting stage

以2 a生梨枣为试材,采用桶栽的栽培形式,研究了不同灌水量对枣树开花坐果期生长的影响。试验设置了中度T2和重度T3两个亏水处理,对照为充分供水T1。结果表明:对桶栽进行复水后,T1(对照)和T2的土壤含水率下降明显,且明显分为两个阶段,T3下降速率缓慢;亏水抑制了直径的增粗;亏水处理同样抑制了新梢的增长,新梢生长呈现线性关系;由本试验可以看出:在亏水期间,亏水与对照处理之间叶绿素含量的变化并没有显著性差异。

Jujube Mills of 2a was used in a barrel planting experiment to study the effects of different water deficit treatments on soil moisture and growth of the trees at the flowering to fruit-setting stage.Two deficit treatments were set in the experiment.The result indicated that after irrigation,the moisture of T1（CK） and T2 dropped obviously,in addition,the process can be divided into two stages,and the descend rate of T3＇s moisture was slow;Deficit irrigation restrained the growth of the trees＇ diameter significantly;Deficit irrigation also restrained the growth of branches,and the growth of branches in three treatments presented linear relation.In the period of deficit irrigation,the spad value between the CK and the other treatments had no significant difference.