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长单506号是长春市农业科学院1999年以自选系Wm03为母本,自选系春553为父本杂交育成的玉米单交种。各级试验示范结果表明:长单506为优质高产中熟玉米杂交种,淀粉含量达到国家二级标准;抗性强、适应性广。
Changdan No. 506 is Changchun Academy of Agricultural Sciences in 1999 with the optional line Wm03 as the female parent, selected line spring 553 as male parent cross breeding corn single cross. Demonstration results at all levels showed that Changdan 506 is a high-yielding middle-maturing hybrid corn with starch content up to the national second-class standard, strong resistance and wide adaptability.