Abstract：
The demand for food is increasing and the use of soil organic amendments in agricultural management practices has been instructed to increase crop yield and reduce dependence on synthetic inorganic fertilizers at low cost to limited resource farmers. However, the effect of organic amendments on the quality and nutritional composition of edible plants has received little attention. Locally available organic amendments (sewage sludge SS, chicken manure CM, cow manure Cow, vermicompost Vermi, and biochar Bio) were chosen to test their impact on field-grown sweet potato, Ipomoea batatas L. yield, root quality, and root nutritional composition. The results indicated that utilizing Cow manure in growing sweet potatoes significantly promoted root yield and root nutritional composition. Cow treatment produced the greatest number of roots compared to Bio, CM, SS, and the control treatments. The results also revealed that the concentrations of vitamin C (260. 3 µg g-1), β-carotene (45.4 µg g-1), soluble sugars (16.7 mg g-1), and total phenols (196.3 3 µg g-1 fresh roots) were greater in the roots of plants grown in Cow compared to the roots of the control treatment. The results indicated the low impact of biochar whereas Cow is recommended for enhancing sweet potato yield and nutritional composition.
摘要：
对粮食的需求正在增加，并且已指示在农业管理实践中使用土壤有机改良剂，以提高作物产量并减少资源有限的农民对合成无机肥料的依赖。然而,有机改良剂对食用植物品质和营养成分的影响很少受到关注。当地可用的有机改良剂(污水污泥SS，鸡粪CM,牛粪牛,Vermi,和生物炭生物）被选择来测试它们对田间种植的甘薯的影响，马铃薯产量，根质量，和根营养成分。结果表明，在种植甘薯中利用牛粪可以显着提高根系产量和根系营养成分。与生物相比，牛处理产生的根数量最多，CM,SS,和对照治疗。结果还显示，维生素C的浓度(260。3µgg-1），β-胡萝卜素（45.4µgg-1），可溶性糖（16.7mgg-1），与对照处理的根相比，在牛中生长的植物的根中的总酚（196.33µg-1新鲜根）更大。结果表明，生物炭的影响低，而奶牛被推荐用于提高甘薯产量和营养成分。
