Effect of the Release of Gravel Elements on Soil Nutrients and Jujube Fruit Yield under Wet-and-Dry Cycles

This study sought to evaluate the potential of mulched gravel release nutrients in field by conducting trials with three variations wet-and-dry cycling soil beneath mulch and bare soil. The results revealed that quartz, muscovite, clinochlore, albite were most abundant minerals gravels. Throughout whole cycle, total content 30 elements measured gravel-mulched was higher than treatment, element rose increasing wet–dry cycle humidity. enrichment ratio (Br) each under relative sequence Mg > Ca K Cr Na Mn V Zn Fe Ti Si C N B> Co (Br = 0) Pb Cu Ga P Sn Sr Al Be Li Mo Ni Se As S. Under mulch, impacted are primarily rock-forming, whereas affected trace elements. cycles mainly K, Ca, Na, contents. differences contents significantly growth jujube trees fruit yield. A dry/wet level 5 L/d per tree cover conditions can effectively improve increase yield without causing environmental problems.