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１ 材料与方法１．１ 供试药剂和水稻品种药剂:７４．７%农民乐７４７、４１%农达(均由美国孟山都公司生产)。
1 Materials and methods 1.1 Test agents and rice varieties Pharmacy: 74.7% of farmers 747,41% of Nongda (both manufactured by the United States Monsanto).