Effects of Water and Fertilizer Coupling on Growth Parameters,Yield and Quality of Pinellia ternate in Xihe
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.
Pinellia ternataWater and fertilizer couplingGrowth parameterYieldQualityXihe
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