Abstract:

In order to clarify the high yield cultivation principle of peanut under single seed precision sowing pattern, choosing the common type peanut variety ‘Luhua 11’ as experimental materiel, a systematic study was conducted on the changes of population ecological characteristics and yield benefit of peanut under different densities, and determined the appreciate density of single seed precision sowing. The results showed that the height of main stem and the length of branching stem of peanut showed an increase trend with the add of the density in the low density range (13.5-19.5 ten thousand plant?hm-2), while the node numbers of main and branching stems indicated a decrease trend. And also under the mode of single-seed precision sowing, the sowing-hole number increased, single plant environment was better, and the mutual influence among the plants was small, which was benefit to shape the high-yield plant type, and to improve light use efficiency of peanut. Therefore, under the conditions of this study, 20 ten thousand seed?hm-2 would be recommended for the appreciate density of single seed precision sowing of peanut. It concluded that in a certain density range, on the one hand, single seed precision sowing of peanut had seed-saving role, on the other hand, it had yield-increasing effect, and moreover, a combination of both will bring greater benefits, which is a feasible technology to obtain high productivity and efficiency of peanut.