无公害蔬菜生产不仅对灌溉用水。周边环境及农药的使用有严格要求，还对施用化肥的种类、用量等有严格的限制，以确保蔬菜中硝酸盐及其它的有害物质的含量不超标。下面仅就无公害蔬菜生产中的施肥技术做一简要介绍。 一、肥料种类。无公害蔬菜生产中，允许使用的肥料类型和种类 Pollution-free vegetable production not only for irrigation water. The surrounding environment and the use of pesticides have strict requirements, but also on the type of fertilizer, dosage and other strict restrictions to ensure that vegetables and other nitrate content of harmful substances does not exceed the standard. The following is only on pollution-free vegetable fertilization technology to make a brief introduction. First, the type of fertilizer. Pollution-free vegetables in the production, the types and types of fertilizers allowed