Effect of the mulching of paspalum notatum flugge on the microclimate in orchard Resistance to and uptake of heavy metals by Vetiveria zizanioides and Paspalum notatum from lead/zinc mine tailings Effects of Different Nitrogen Application Rates on The Yield, Leaf Total Nitrogen and Water Content of Paspalum notatum Flügge Allelopathy of Chamaecrista spp on Paspalum notatum under aluminum and magnesium stresses