施肥水平对半夏产量和质量影响的研究

Effects of Fertilizing Levels on Output and Quality of Pinellia ternate

目的:通过不同施肥水平对半夏产量、有效成分、重金属含量、等级、折干比等比较,寻找半夏栽培的最佳肥料配比。方法:田间施肥水平的比较采用L9(34)正交设计试验,总生物碱含量测定采用紫外分光光度法,重金属含量采用原子吸收法。结果:氮肥水平是影响半夏产量和质量的主要因素,磷肥次之,钾肥的影响最小。结论:半夏种植的最佳施肥组合为每平方米施纯N 25 g、P2O518 g、K2O 9 g,比例为N∶P2O5∶K2O=2.8∶2∶1,可以兼顾较高的产量和总生物碱含量。

Objective ：To compare the effects of the different fertilizing levels on the output, the effective element, the content of heavy-metal, the grade and the ratio of wet to dry of Pinella ternate to obtain the best fertilize ratio on the planting. Methods ： The orthogonal desing method L9 （34 ） was applied on the comparison between the different fertilization levels. The content of alkaloid was determined by UV spectrophotometer. The conten of heavy-metal was determined by atom absorption. Results： The factors that affected the output and the quality of Pinellia ternate were N 〉 P 〉 K. Conclusion： The best fertilizer combination is N 25 g/m^2, P2 05 18 g/m^2 , K20 9 g/m^2 and the application ratio is2. 8： 2：1 for them, in which the higher output and the content of alkaloid should be obtained.