Effect of organic fertilizers and biochar carbon on soil nutrients, yield and quality of sweet potato

摘要

Modern conventional agriculture, which is based on high use of chemical and energy inputs and oriented to maximization of returns and profits, as often regarded as detrimental and unsustainable in along term. In this context, organic farming has beenadvocated as a potential alternative to the conventional agriculture due to its obvious effects on improving soil quality and fertility, protecting environment, increasing agricultural returns as well as conserving agroecosystem. This research compared the effect of different organic fertilizers and biochar carbon on the change of soil nutrients, the yield and quality (sugar content and shape) in sweet potato production.