Department of Crop Science, Universiti Putra Malaysia, Serdang Selangor 43400, Malaysia.
Molecules. 2012 Jun 28;17(7):7843-53. doi: 10.3390/molecules17077843.
The source and quantity of nutrients available to plants can affect the quality of leafy herbs. A study was conducted to compare quality of Cosmos caudatus in response to rates of organic and mineral-based fertilizers. Organic based fertilizer GOBI (8% N:8% P₂O₅:8% K₂O) and inorganic fertilizer (15% N, 15% P₂O₅, 15% K₂O) were evaluated based on N element rates at 0, 30, 60, 90, 120 kg h⁻¹. Application of organic based fertilizer reduced nitrate, improved vitamin C, antioxidant activity as well as nitrogen and calcium nutrients content. Antioxidant activity and chlorophyll content were significantly higher with increased fertilizer application. Fertilization appeared to enhance vitamin C content, however for the maximum ascorbic acid content, regardless of fertilizer sources, plants did not require high amounts of fertilizer.
植物可利用的养分来源和数量会影响叶菜类草药的质量。本研究旨在比较不同有机和无机肥料对重瓣鸡冠花质量的影响。基于 N 元素用量，评估了有机肥料 GOBI（8% N：8% P₂O₅：8% K₂O）和无机肥料（15% N、15% P₂O₅、15% K₂O），用量分别为 0、30、60、90、120 kg·ha⁻¹。与施用无机肥料相比，施用有机肥料可降低硝酸盐含量，提高维生素 C、抗氧化活性以及氮和钙养分含量。随着施肥量的增加，抗氧化活性和叶绿素含量显著提高。施肥似乎可以提高维生素 C 含量，但对于最大的抗坏血酸含量，无论肥料来源如何，植物都不需要大量施肥。
