Closed-loop greenhouse irrigation and nutrient reuse in Shandong’s vegetable clusters, ChinaChen Xing, Iroda Sadulloeva, Malika Ruzibakieva, Dilnoza Khamraeva and Feruza KhamidovaE3S Web Conf., 670 (2025) 02007DOI: https://doi.org/10.1051/e3sconf/202567002007