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In drip irrigation, a significant reduction in the quantity and quality pistachio shell of water resources in most parts of Iran

It has been argued that the use of methods with lower losses and higher water use efficiencies

Irrigation experts and users of the water and agriculture sector more than ever.

One way to increase irrigation efficiency is to use low irrigation methods

Performance does not change significantly with reduced water consumption. Pistachio product in

Iran is important for non-oil exports and has about 370,000 hectares of orchards

About 80% of Iranian pistachios are located in Kerman province.

In this research, low irrigation method in subsurface drip irrigation system with drippers

Vip was examined in the fertilizer channel of pistachio trees. Experimental treatments include two depths

Fertilizer channel (50 and 70 cm), three irrigation levels (100% I1), (75% I2) and (50% I3)

The amount calculated for the water requirement of pistachio crop). Experimental design in the form of blocks

Completely randomized with three replications.

Irrigation water salinity was 1.8 dS / m and irrigation cycle was 10 days. also

Comparison of surface and subsurface drip irrigation methods (with low irrigation) was performed.

The results based on the data obtained from the implementation of the plan in the 85-86 crop year indicate that

The amount of irrigation water given to different treatments in subsurface drip irrigation

Comparison with surface drop (with 100% water requirement) with a decrease of 98%, 74%, respectively

52% were accompanied. While the rate of performance in different treatments compared to drip

Surface has increased by 147%, 138% and 149%, respectively.