Abstract:

In this experiment, the effects of different proportions of nitrogen, phosphorus and potassium on the yield and quality of Curcuma wenyujin were studied. In this study, four different fertilization formulations were set up using field experiments, and the basal fertilizer dosage of each treatment was 750 kg·hm^-2. The results showed that under the premise of equal total use of nitrogen, phosphorus and potassium, the yield of Curcuma wenyujin was the highest under basal application of formula fertilizer 2, and the yield of rhizomes and tubers of Curcuma wenyujin underground was increased by 11.3% and 17.9%, respectively, compared with conventional fertilization. Compared with conventional fertilization, formula fertilizer 1 and 3 also increased the yield of Curcuma wenyujin, but there was no significant difference. Compared with conventional fertilization, the nitrogen and phosphorus content in Curcuma wenyujin was increased by formula fertilizer treatment. At the same time, basal application of formula fertilizer can also increase the content of Ca, Mg and trace elements Zn and B in rhizomes and tubers. In summary, the application of basal fertilizer formula fertilizer 2 can not only increase the yield of Curcuma wenyujin, but also increase the content of macroelements and medium and trace elements in rhizomes and tubers, which has good promotion and application value.

Key words: Curcuma wenyujin, basal fertilizer, nitrogen, phosphorus and potassium, yield, medium and trace elements