I think:

1. Organic farming including residue management for managing soil health

2. Ley farming

3. Use of AM fungi

4. Use of Nano-nutrients and nano-polysaccharides for drought resistance, moisture retention, C build up and better soil aggregation

5. Isolation and development of saline resistant beneficial microorganisms

Add minimum salt through irrigation.

Opt drip irrigation.

Opt mulching -organic/ plastic.

Use anti transpirants.

Check plant growth

check the following links in these articles are discussed alternatives which may help your question

https://www.ars.usda.gov/arsuserfiles/20360500/pdf_pubs/P1043.pdf

https://www.researchgate.net/profile/Alexander_Yakirevich/publication/268057844_Yakirevich_et_al_JOH2013/links/54607f6d0cf295b56161ea70.pdf

https://www.researchgate.net/profile/Nigel_Quinn/publication/313793448_Use_of_the_Hydro-Salinity_Crop_Production_Opti-mization_Model_APSIDE_to_Validate_Results_from_an_Updated_Regional_Flow_Model_of_the_San_Joaquin_River_Basin/links/58e6c8eeaca27222a03f8a8e/Use-of-the-Hydro-Salinity-Crop-Production-Opti-mization-Model-APSIDE-to-Validate-Results-from-an-Updated-Regional-Flow-Model-of-the-San-Joaquin-River-Basin.pdf

I think, water retention in relation to crop residues. Further, you can set up experiment regarding amount of crop residues & changes of abiotic factors if bio-manures are added.

It is possible (barely) to grow oranges in sea water - you do need to have VERY well drained soil and NEVER allow it to dry out. A lot of this work has been done in Israel. If you are using saline water, there are two critical issues. 1. Make sure salts are regularly flushed from the root zone (and make sure you know where the salt is going - NOT building up under the root zone) 2. make sure the osmotic potential of the root zone water is always low enough for the plant to absorb water. (ie keep it wetter than you would for pure water)

1. the method to reduce soil alkali-salinzation, such as HPMA, soda lime-related agent; or tillage methods.

2. proper species breeding for utilization in this difficult soils. a lot is in genetic engineering just in science, and few of them has been applied into practices.

I proceed many researches on the use of saline water (Drainage water) for citrus root stocks and transplants and i have a good results when i use humic acid as foliar or soil applications.

1. Crop factor: What you can look at is what crops would tolerate the levels of salinity (saline water concentrations). Identify the best one that is also economical.

2. Agronomic management: Mitigating the concentration through various strategies, agree with the comments made by Drs. JC Tarafdar, Mukesh Kumar and the others.

Please refer to the published research made by scientists of the ICAR-CSSRI, Karnal, Haryana . And also the institute's Perspective Plan document.

Safe use of saline water without affecting the soil health.

Optimum crop production by using balanced fertilizers.

Minimum use of water by drip or other methods.