采用二次回归通用设计的方法，对雄性截形叶螨生长发育进行了研究。
Under auto_controlled temperature and light length in small rooms, using the way of twice regression general design, growing of male_ Tetrangchus truncatus Ehara was studied.
基生叶长圆形或椭圆形，截形或楔形在基部。
Basal leaf blade oblong or elliptic, truncate or cuneate at base.
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