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上海市召开蘑菇专用复合微量元素石膏(下简称复微石膏)应用技术交流会,上海市郊县、及江苏省有关市县的44位应用单位代表参加了会议。杨瑞长先生在会上作了题为《复微石膏对堆肥中若干物质转化的作用》、《复微石膏对蘑菇产量和质量的作
Shanghai held a mushroom composite trace element gypsum (hereinafter referred to as the microcalorime) Application Technology Conference, Shanghai suburbs, and Jiangsu Province, the 44 cities and counties in the application unit representatives attended the meeting. Mr. Yang Ruichang made a speech at the conference titled “The Effect of Fused Gypsum on Some Substance Conversion in Composting”, "The Effect of Fused Plaster on Yield and Quality of Mushroom