氮磷钾对盾叶薯蓣产量及薯蓣皂苷元含量的影响

Effect of N,P,K on Rhizome Yield and Diosgenin Content of Dioscorea zingiberensis

目的 :研究大田条件下N、P、K肥料不同配比对盾叶薯蓣根茎产量及薯蓣皂苷元含量的影响。方法 :采用肥料单因素正交试验 ,SPSS11 5统计软件包统计分析。结果 :N、P、K可不同程度提高盾叶薯蓣根茎产量及薯蓣皂苷元含量 ,其中N、K对产量影响达到极显著水平 (P <0 0 1) ,P肥达到显著水平 (P <0 0 5 ) ,N、P、K单施对含量影响未达到显著水平 (P >0 0 5 ) ;3种肥料配施以N肥对薯蓣皂苷元含量影响达到显著水平 (P <0 0 5 )。表明肥料对薯蓣皂苷元含量影响的顺序为N >K >P ,对根茎产量影响的顺序为K >N >P ,综合最优组合为N2 K1P2 。结论 :适当配比的N、P。

Objective:A field experiment was conducted to investigate the different effects of various applying ratios of nitrogen (N),potassium (K) and phosphate (P) on diosgenin content and Rhizoma yield of Dioscorea zingiberensis Method:Experiment was conducted with both one factor and orthogonal design, and data was analyzed statistically on SPSS 11 5 Results:Compared with the control groups,the yield of rhizome was significantly increased by N (P<0 01),K(P<0 01),P(P<0 05) The content of diosgenin has no obvious increase (P> 05) by individual application of N, P and K,while changed significantly (P<0 05) by the combination of proper levels of N, P, K Conclusion : The degree of effect on diosgenin content was ranged with N>K>P,while on output of dioscorea rhizome was K>N>P,and the combination of N 2K 1P 2 was superior to others