“楚门文旦”是我省柑桔中的名种,具有果大、形美、皮溢清香,肉脆汁多,酸甜适口,营养丰富,耐贮运,投产早,盛果期长,稳高产等特点。但目前还存在着品系混杂,良莠不一等问题。为了进一步提高文旦的品质,探讨“楚门文旦”有核无核的原因,力争达到商品标准化,一九八五年至一九八六年我们对“楚门文旦”进行了抽样调查,现将调查总结如下。 一、调查材料与方法 (一)材料 1.文旦、玉橙、土柚混栽区:在楚门区 “Chumen pomegranate” is the name of citrus in our province, with a large fruit, shaped the United States, overflowing fragrance, crisp and more juicy, sweet and sour taste, nutrient-rich, storage and transportation, Stable high yield and other characteristics. However, there are still some problems of mixed strains and mixed results. In order to further improve the quality of Pandan, to explore the reasons for the existence of nuclear and non-nuclear in “Chumen Pandan” and strive to standardize its products, we conducted a sample survey of Chumen Pandan from 1985 to 1986, The investigation is summarized as follows. First, the investigation of materials and methods (a) material 1. Pudin, jade orange, soil pomelo mixed planting area: in the Chumen District