关键词: NPK用量, NPK用量, 露地西兰花, 产量, 地上部N、P、K, 肥料利用率, 肥料农学效率, 肥料偏生产力

Abstract: the Relationship of sorghum density and yield under different width row space with narrow row space and same row space were studied by the method of two element resourceful test. For exploring high yield and plant way of sorghum and increasing sorghum farming economic results and multiple crop index of land. The results showed that: the yield of width row space with narrow row space was significantly higher same row space, increasing yield 7%-11%. The yield of sorghum reduced according the width row space with narrow row space increasing according under same density. Density of the width row space with narrow row space, plant reduced by 10% than the same row space plant under same yield, which could effectively control lodging and raise the quality of sorghum.