| In dry conditions, influences of nitrogen and phosphorus fertilizers on yield, quality and agronomic traits of benne were investigated. The results showed that nitrogen and phosphorus fertilizers could increase the yield of benne when proper amounts of nitrogen fertilizer (N 30～60 kg·hm-2) and phosphate fertilizer (P2O5 22.5～90 kg·hm-2) were applied, increasing benne seed yields by 50.00%～84.23%. When certain amount of phosphate (P2O5 30～120 kg·hm-2) was used, elevated amount of nitrogen also promoted benne yield, whereas low phosphorus and high nitrogen or high phosphorus and high nitrogen fertilizers displayed adverse effects on benne yield. N fertilizer played a more predominant role in affecting yield than phosphorus fertilizer. In particular, the N2P3 treatment (N 60 kg·hm-2, P2O5 67.5 kg·hm-2) achieved the highest yield, a maximum of 1 719.44 kg·hm-2. Nitrogen fertilization could increase plant height, length of benne processing, 1 000 grain weight, stem number, number of branches per plant and effective branch number. However, high phosphorus did not help the improvement of agronomic traits of benne. The effects of combined application of nitrogen and phosphorus fertilizers on the contents of palmitic acid and oleic acid were positive, resulting in an increase of 0～5.62% and 0～4.06%, respectively. Nitrogen fertilizer could increase the content of noleic acid and linolenic acid, but high phosphorus application exhibited opposite effects. |