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1 材料与方法 1.1 供试品种: 江门白菜、葵扇黑叶白菜、三月青菜心、50天菜心、60天菜心、70天菜心,6个品种。 1.2 试验处理: 设在牡丹江地区的宁安农场、八五○农场,松花江地区的哈市郊、宾县,海拉尔地区的为呼盟、赤峰,绥化地区的为绥棱农场,大兴安岭地区大杨树镇。 1.3 试验条件及安排
1 Materials and methods 1.1 The test varieties: Jiangmen cabbage, black leaf cabbage Kwai fan, March cabbage heart, 50 days cabbage heart, 60 days cabbage heart, 70 days cabbage heart, 6 varieties. 1.2 Tests and Treatments: Ning’an Farm, 850 farm in Mudanjiang area, Harbin suburbs, Binxian and Hailar areas in Hu’nan and Mudanjiang areas are Hulumei and Chifeng in Suihua area, Dalangshe town in Daxinganling area. 1.3 Test conditions and arrangements