RESEARCH ON SOME TECHNICAL MEASURES OF LARGEHEAD ATRACTYLODES RHIZOME (Atractylodes macrocephala Koidz.) CULTIVATION IN BAC HA DISTRICT, LAO CAI PROVINCE

Abstract

Largehead Atractylodes Rhizome (Atractylodes macrocephala Koidz.) is a precious medicinal plant widely used in medicine. Experiments were conducted over two years (2022 - 2023) in Bac Ha district, Lao Cai province, aiming to research the effect of fertilizer amount and mulching materials on the yield and quality of medicinal herbs of Largehead Atractylodes Rhizome. The experiments were designed using the randomized complete block design (RCBD) method with three replications. Research results regarding the effect of fertilizer amount determined that the fertilizer amount (2,000 kg Microbial organic fertilizer + 180 kg N + 90 kg P₂O₅ + 150 kg K₂O + 830 kg Lime powder) was the most appropriate for obtaining the highest yield (2.85 - 2.89 dry tons/ha) and the content of Atractylenolid III (0.062 - 0.063%). In terms of the experiment related to mulching materials, the plastic covering formula was the most suitable for the highest yield (2.87 - 2.9 dry tons/ha) and the content of Atractylenolid III (0.056 - 0.058%).