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日本 SPAD-501型叶绿素计系日本农林水产省农蚕园艺局农产科土壤,作物分析仪器开发事业机构(简称 SPAD)协同美能达照像机公司开发所得新产品。据省农科院水稻研究所引用结果,该叶绿素计体积小(70×212.3×37毫米),重量轻(350克),携带方便,测定方法简便,所得数据精确,适于各种作物及林木氮素营养诊断。可供科研、生产单位广泛应用。该叶绿素计采用透过式,两波长光学浓度差测定方式,可对着生叶进行直接快速测定。只
Japan SPAD-501 chlorophyll meter Japan’s Ministry of Agriculture, Forestry and Fisheries Horticulture Horticulture Bureau Soil and Crop Analysis Instruments Development Agency (SPAD) in collaboration with Minolta camera company to develop new products. According to the provincial Academy of Agricultural Sciences, Rice Research Institute quoted the results of the chlorophyll small size (70 × 212.3 × 37 mm), light weight (350 grams), easy to carry, the determination method is simple, accurate data obtained, suitable for a variety of crops and trees Nitrogen nutrition diagnosis. For scientific research, production units widely used. The chlorophyll meter using transmission, two-wavelength optical density difference measurement, the leaves can be measured directly and quickly. only