China is a great agricultural country with large population, limited soil resources and traditional farming mode, so the central government has been attaching g
The fluxes of CO2 and CH4 emission of the two types of primary swamp were measured in Sanjiang Plain using the opaque chamber and gas chromatogram technique. Th
In terms of demands of rice farming in the southern China, the information processing system and the yield measurement system that is installed in combine harve
Matrix-bound phosphine (PH3), a new form of phosphorus, was found in sediment of Jiaozhou Bay in December 2001. Concentration and distribution of PH3 in differe