College of Biological and Food Engineering, Huaihua University, Huaihua, Hunan 418008, P. R. China.
Key Laboratory of Hunan Province for Study and Utilization of Ethnic Medicinal Plant Resources, Huaihua, Hunan 418008, P. R. China.
Sci Rep. 2017 Feb 27;7:43284. doi: 10.1038/srep43284.
Based on the characteristics of Lycoris aurea (L. aurea) natural distribution and local soil types, we selected four representative types of soil, including humus soil, sandy soil, garden soil and yellow-brown soil, for conducting the cultivation experiments to investigate key soil factors influencing its growth and development and to select the soil types suitable for cultivating it. We found that there existed significant differences in the contents of mineral elements and the activities of soil enzymes (urease, phosphatase, sucrase and catalase) etc. Among which, the contents of organic matters, alkali-hydrolysable nitrogen, Ca and Mg as well as the activities of soil enzymes in humus soil were the highest ones. In yellow-brown soil, except for Fe, the values of all the other items were the lowest ones. Net photosynthetic rate (P), biomass and lycorine content in humus soil were all the highest ones, which were increased by 31.02, 69.39 and 55.79%, respectively, as compared to those of yellow-brown soil. Stepwise multiple regression analysis and path analysis indicated that alkali-hydrolysable nitrogen, and Ca etc. were key soil factors influencing P, biomass and lycorine content of L. aurea. Thus, humus soil can be used as medium suitable for artificial cultivation of L. aurea.
基于忽地笑（L. aurea）自然分布特点和当地土壤类型，我们选择了四种具有代表性的土壤类型，包括腐殖土、沙土、园土和黄棕壤，进行栽培实验，以研究影响其生长发育的关键土壤因素，并选择适合其栽培的土壤类型。我们发现，土壤中矿质元素含量和土壤酶活性（脲酶、磷酸酶、蔗糖酶和过氧化氢酶）等存在显著差异。其中，腐殖土中有机质、碱解氮、Ca 和 Mg 的含量以及土壤酶的活性最高。在黄棕壤中，除 Fe 外，其他所有项目的值均最低。腐殖土中忽地笑的净光合速率（P）、生物量和石蒜碱含量均最高，分别比黄棕壤增加了 31.02%、69.39%和 55.79%。逐步多元回归分析和通径分析表明，碱解氮和 Ca 等是影响忽地笑 P、生物量和石蒜碱含量的关键土壤因素。因此，腐殖土可用作人工栽培忽地笑的适宜介质。
