تاثیر سیستم های مختلف آبیاری میکرو بر عملکرد کمی و کیفی پرتقال تامسون ناول در غرب مازندران

A 3-year field experiment was conducted to compare fruit yeild and quality of Thomson navel orange ( on flyeeng dragon ) under four microirrigation systems. The experimental design was complete randomaized blocks with four treatments and six replicates. The treatments consisetd of four microiirigation system: Microjet, Bubbler, two and three in-line drippers. Trees irrigated during spring and summer seasons when tensiometeres indicated a soil tensions of 50 kpa . The amounts of applied water in each treatment measured by water metere.In middle November, one tree per replication were picked and gross yields measured. Then, 25 fruits per tree were randomly separated and peel thickness, diameter, height, weight, TA and TSS were measured. Trunk diameter and canopy volume were measured in Mar. 2003-2005 and Nov. 2005. Comparison of means showed that fruit yeild of trees under microjet and two dripper irrigation was siginifficantly higher than bubbler nad three dripper system. Water productivity in Microjet and Two drippers were about 16.9% to 20.3% more than that in Bubbler and Three drippers.

Keywords:

آبیاری میکروجت , عملکرد کمی , عملکرد کیفی , پرتقال تامسون ناول , غرب مازندران , آبیاری قطره ای , آبیاری حبابی