Study on reasonable plant and row spacing of sugarbeet

：Crop＇s high yield is obtained from coordination increase of individual and population growth in order to achieve the high yield it is necessary firstly to know the individual productivity and population productivity．There is the optimal point in every kind of cultivated technique in production there is also effective plant and row spacing and optimal plant and row spacing in sugarbeet． In this study the experiment on different spacing was conducted． The results indicated that the effective spacing was 53．4cm in ridge cultural plot of sugarbeet in the black siol and the optimal spacing was 29．7cm．If the spacing is too much smaller the individual plant growth will be influenced greatly and the regular pattern of its biological development will be changed ″S″ shape curve of its growth is not remarkable．