It's much better to plant some kinds of grass, I think...

It's much better to plant some kinds of grass, I think...

It's much better to plant some kinds of grass, I think...

It's much better to plant some kinds of grass, I think...

It's much better to plant some kinds of grass, I think...

Thank you @Cao Qing-jun for sharing your idea. Is it possible that you suggest some grasses you may think are beneficial in date garden ecosystem?

Well

Crops such as cowpea, groundnut, beans, bambara groundnut and other leguminous crops have roots that are able to make soil nitrogen available to other plants.

https://www.fao.org/3/x3996e/x3996e36.htm

This is another useful article

https://www.jstor.org/stable/26346857

Thank you @Faraed Salman for your answer and sharing the link.

In Jahrom Iran, they are extensively intercropped successfully with citrus trees.

Water quality should be considered.

Thank you @Farhad Khorsandi for sharing your idea.

You can plant legumes

Legumes