为落实县委、县政府把绿色食品水稻提档升级的指示精神，１９９８年，黑龙江省庆安县绿办选择生态环境良好的４个乡镇和种植水平较高的农户种植２２０亩，进行ＡＡ级绿色食品水稻的试验研究。年初县绿办组织技术人员深入到农户，对品种、地块、育苗大棚和施肥等技术逐一落... In order to implement the directives of the county party committee and government to upgrade the green food rice, in 1998, Qinghai Office of Qing’an County, Heilongjiang Province selected 4 towns and villages with good ecological environment and 220-acre farmer households with higher planting level to carry out AA grade green food Experimental study of rice. At the beginning of the year, the Green Office organized technical personnel to go to farmer households, one by one on the varieties, plots, nursery greenhouse and fertilization ...