Through the pot experiment, the effects of different cropping patterns of soybean and maize seedlings on rhizosphere soil urease, catalase, polyphenol oxidase a
Since 2009, the new rural pension insurance in Heilongjiang Province has obtained certain achievements, but the effects are not obvious. Reflection on the devel
To investigate the antibacterial activity of commercial organic acid Activate WD (WD), the minimal inhibitory concentration (MIC) and minimal bactericidal conce