Grassland is the important component of the terrestrial ecosystems. Estimating net primary productivity(NPP) of grassland ecosystem has been a central focus in gl
Flixweed(Descurainia sophia L.) is a problematic and widespread weed in winter wheat fields and has been controlled by tribenuron-methyl for more than twenty ye
Understanding bacterial transportation in unsaturated soil is helpful for reducing and avoiding pathogenic contamination that may be induced by irrigation with