为让居民吃上放心菜 ,北京、天津、河北三省市已达成“华北护菜协议” ,合作建立“京津冀蔬菜农药残留监测协作网” ,给“华北菜篮子”进一步构筑安全屏障。护菜协议包括 :对三省市生产基地的蔬菜从产前、产中、产后实施全过程的程式化管理和服务 ,形成一套成熟的农药残留监控 In order to let residents eat reassuring vegetables, Beijing, Tianjin and Hebei provinces and cities have reached the “North China Conservation Agreement” and jointly set up the “Beijing-Tianjin-Hebei Vegetable Pesticide Residue Monitoring Network” to further build a safety barrier in the “North China Vegetable Basket.” The protocol for preserving vegetables includes: formulating a set of mature pesticide residue monitoring and control services for the whole process of the management of vegetables in the production bases in three provinces and cities from prenatal, mid-production and post-natal areas