随着生产的发展,工业三废(度水、废气、废渣)的大量排放、频繁使用农药、滥用化肥、使用未腐熟的人畜粪尿作肥料等都会对蔬菜产生污染。为了克服污染,生产出优质的符合国家标准的“无公害”蔬菜,一般可 With the development of production, the heavy discharge of industrial waste (such as water, exhaust gas and waste residue), the frequent use of pesticides, the abuse of chemical fertilizers and the use of non-decomposed human and animal manure as fertilizers will pollute the vegetables. In order to overcome the pollution, to produce high-quality “pollution-free” vegetables in line with national standards, generally