为了提升临夏地区西和半夏的产量和品质，进一步明确水肥耦合对西和半夏生长发育的影响，采用裂区试验设计，以灌水量为主处理，肥料配比为副处理，研究了不同水肥耦合处理对半夏生长发育、产量、品质的影响。结果表明，当灌水量为500 m3/hm2(苗期和块茎膨大期各灌水250 m3/hm2)，施肥水平为施腐熟牛粪15 000 kg/hm2、N 342 kg/hm2、P2O5 275 kg/hm2、K2O 110 kg/hm2时，半夏折合产量最高，为25 114.42 kg/hm2；品质最好，水分含量最低，为43.3 g/kg；总灰分含量较低，为31.6 g/kg；浸出物含量最高，达153.3 g/kg。由此可见，该水肥配比适宜在临夏西和半夏生产中加以推广应用。

In order to improve the yield and quality of Pinellia ternata in Xihe County, Linxia and to further clarify the impact of water fertilizer coupling on its growth and development, a split-block experimental design was adopted, with irrigation as the main plot and fertilizer ratio as the sub-plot. Effects of different water fertilizer coupling treatments on the growth, development, yield, and quality of Pinellia ternata were studied. The results showed that when the irrigation amount was 500 m3/ha (250 m3/ha each during the seedling stage and tuber expansion stage), and the fertilization ration of 15 000 kg/ha decomposed cow manure, 342 kg/ha of N, 275 kg/ha of P2O5, and 110 kg/ha of K2O, the yield of Pinellia ternata was the highest, at 25 114.42 kg/ha. The quality was also the best, with the lowest moisture content at 43.3 g/kg, lower total ash content at 31.6 g/kg, and the highest extract content at 153.3 g/kg. Therefore, this water and fertilizer ratio is suitable for promotion and application in the production of Pinellia ternata in Linxia.

S567；S147.2

甘肃省中医药科研课题(GZKP-2023-66)。