脐橙是众所周知的名优柑桔品种,国内因其产量低而发展缓慢。我们于1987年春引进6个日本脐橙品种,进行品种对比试验,现报道如下。 一、材料与方法 供试品种为丹下、铃木、森田、清家、白柳和吉田,共180株,定植株行距3.3×2m。每小区10株,重复3次,随机区组排列,周围设保护行。定植地为 Navel orange is a well-known citrus varieties, the slow development of its domestic production due to low. We introduced six Japanese navel orange varieties in the spring of 1987 and conducted comparative trials of varieties. We report the following. I. Materials and methods The test varieties were Danxia, ​​Suzuki, Morita, Qingjia, Bai Liu and Yoshida, with a total of 180 lines. The row spacing of the planted plants was 3.3 × 2m. 10 per cell, repeated 3 times, randomized block arrangement, surrounded by protection line. For planting