施用磷酸二铵对延胡索产量品质的影响

Effect of applying diammonium phosphate on yield and quality of Corydalis Yanhusuo

目的研究施用磷酸二铵对延胡索产量品质的影响。方法设计不同梯度的磷酸二铵用量,在相同种植条件下,观察并记录不同施肥量下延胡索的主要生长指标。采收后按照《中国药典》2015年版要求,测定总灰分、醇溶性浸出物和延胡索乙素含量,并进行分析比较。结果磷酸二铵用量为375 kg/hm^2时延胡索长势最旺,折干率最高,为33.7%,块茎最大,直径为2.57 cm/个,鲜产量最高,为5 482.2 kg/hm^2,比对照增产38.2%,总灰分最低,为3.0%,醇溶性浸出物和延胡索乙素含量最高,分别为24.8%、0.128%。结论施用磷酸二铵能提高延胡索的产量和质量。

Objective To study the effect of applying diammonium phosphate on the yield and quality of Corydalis yanhusuo. MethodsBy designing different gradient diammonium phosphate amount, the main growth indicators at different fertilizer amount were observed and recorded under the same planting condition. The contents of total ash, alcohol soluble extract, and tetrahydropalmatine were measured and analyzed after harvest according to the requirement of 2015 edition Pharmacopeia. Results The tubers growth of C. yanhusuo was the most flourishing with the highest drying rate of 33.7% at diammonium phosphate application amount of 375 kg/hm2. Tuber diameter was the largest（2.57 cm）, the fresh yield was the highest（5 482.2 kg/hm2）, and the yield was increased to 38.2% than that without fertilizer cultivation. The content of total ash（3.0%） was the lowest. The contents of alcohol soluble extract and tetrahydropalmatine were 24.8% and 0.128%, respectively. Conclusion Applying diammonium phosphate could increase the yield and quality of C. yanhusuo.