Through analysis of trap catches and fruit decay rate of different pear varieties,it was found that there were significant differences in parasitization of Grap
[Objective]The paper was to explore the influence of near-surface low temperature on cultivation of soft-seed pomegranate,and to provide guidance for planting l
Grid processing was carried out to the Dandong district.The Gauss point source proliferation was carried out to calculate SO2.By dint of Visual Basic 6.0,the pr