Energy allocation to growth and reproduction in Leymus chinensis population Plant growth, reproduction and biomass allocation in response of clonal plant Spartina anglica to alternative irrigation of fresh and saline water Optimal C/N ratio of pig manure-rice straw mixture for its composting with earthworm and maturity assessment of the mixture compost. Growth and reproduction and their relationships with soil moisture in artificially established Artemisia sphaerocephala populations of different densities in the Alxa Desert