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株距均匀性是单粒排种器的主要鉴定指标。流行最广的试验室测定方法是涂黄油的帆布带法。或者是排种器相对地面运动,或者是地面相对排种器运动。这个方法是够直观的,而且能保证很快地得到数据。但是,在没有试验台的情况下采用比
Plant spacing uniformity is the main indicator of single seed metering device. The most popular laboratory test method is butter coated canvas band method. Or the seeder moves relative to the ground or the ground relative to the seeder. This method is intuitive enough and guarantees quick access to data. However, the ratio is used without a test bench