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1范围本标准规定了无公害西瓜每公顷单茬产45000~75000kg(3000kg~5000kg/667)的产地环境技术条件,肥料农药使用原则和要求,生产管理等系列措施。本标准适用于河北省露地和保护地西瓜无公害生产。2引用标准下列文件中的条款通过本标准的引用而成
1 Scope This standard specifies the pollution-free watermelon per hectare stubble yield 45000 ~ 75000kg (3000kg ~ 5000kg / 667) origin environmental technical conditions, fertilizers and pesticides use the principles and requirements, production management and other measures. This standard applies to open areas and protected areas of Hebei Watermelon pollution-free production. 2 Normative references The following documents contain provisions which, through reference in this standard