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本文以结球莴苣萨琳娜（Ｓａｌｉｎａｓ）品种为试材，探讨了结球莴苣的生长动态、各器官重量比例的变化特点、叶数的增长、叶形指数的变化规律以及球叶数与球重的关系等。
In this paper, we studied the growth dynamics of lettuce, the changes of weight proportion of each organ, the growth of leaf number, the change rule of leaf index, The relationship and so on.