不同施肥条件对鱼腥草甲基正壬酮和可溶性糖含量的影响

目的：探讨5种肥料在3种施肥水平下对鱼腥草有效成分甲基正壬酮和糖含量的影响。方法：采用单因子随机区组设计,测定各施肥条件下鱼腥草的甲基正壬酮和可溶性糖含量。结果：鱼腥草地上部和地下部甲基正壬酮含量均以施常规肥的最高,分别达到18.6 μg·g^-1 和26.0 μg·g^-1；施用人粪尿的甲基正壬酮(14.9 μg·g^-1)也显著高于施用猪粪、鸭粪、化肥的,其余处理的鱼腥草地上部、地下部甲基正壬酮含量间无显著差异。施用有机肥可提高鱼腥草糖代谢水平,主要包括叶片的总糖、可溶性糖、果糖和还原糖含量,其中以人粪尿和猪粪的效果最明显。结论：从鱼腥草的甲基正壬酮含量和产量看,大田种植鱼腥草在施肥上应以人粪尿为主,配合复合肥和速效化肥使用,以平衡养分和肥效；在施肥量上以施用108 000 kg·hm^-2的人粪尿为宜,以提高鱼腥草的品质。

Effects of fertilizer application on contents of 2-undecanone and soluble carbonhydrate in Houttuynia cordata with different fertilizers

OBJECTIVE: To investigate the effect of five kinds of fertilizers at three application levels on the content of 2-undecanone and carbohydrate in Houttuynia cordata. METHOD: A single factor randomized block design was used to investigate the content of 2-undecanone and carbohydrate in the plant. RESULT: The results showed that the content of 2-undecanone was the highest both in aerial and underground parts of H. cordata, which was fertilized with complex fertilizers served in conventional way, having the content 18.6 microg g(-1) and 26.0 microg g(-1) respectively. In addition, 2-undecanone contents in aerial parts of H. cordata (14.9 microg g(-1)) fertilized with manure of human were also higher than that with chemical fertilizer, pig and duck manures, but no significant difference were found among the other treatments in aerial or underground parts of the plants, respectively. The results also demonstrated that fertilized with organic fertilizer might be beneficial to enhance the quality of sugar in H. cordata, mainly including the contents of total sugar, solutable sugar, fructose and reduced sugar in the plants, especially with manure of human and pig. CONCLUSION: As the result of this study and the related previous research on yield of H. cordata were considered, the fertilizing ways for increasing quality of H. cordata should take the manure of human as a main fertilizer and mix with the other organic fertilizers, complex fertilizers and chemical ones may be needed to balance the plant nutrient. In the field practice, the amount of organic fertilizer including 108,000 kg hm(-2) human mature, together with some high-efficient complex fertilizer and a small amount of quick-acting chemical fertilizer is recommended.