哈姆林甜橙砧木比较试验——Ⅱ.宜昌橙不同选系的比较

Study on the Rootstock of Hamlin Orange Ⅱ. Comparison of Different Selections of Ichang Papeda

经15年试验,比较了以宜昌橙6个不同选系作砧木,对哈姆林甜橙树体生长、果实产量及品质的影响。结果表明,树冠最高大的是以1号选系作砧者,最矮小的是以6号选系作砧者,其树冠体积分别为枳砧对照的31.8％和4.7％;单位树冠体积产量以6号选系为砧者最高,而单株产量和单位树冠投影面积产量则以1号选系为砧者最高;不同选系宜昌橙砧对哈姆林甜橙果实大小、果皮厚薄也有明显影响。认为宜昌橙1号选系为此较有希望的矮化砧木,6号选系宜作超密植栽培的砧木材料。

The effects of 6 different Ichang papeda selections used as rootstock on the growth,productivity and fruit quality of Hamlin orange have been compared for 15 years. The canopy of tree on ichang papeda No. 1 is the biggest,and the smallest one is the tree on Ichang papeda No. 6. Their canopy volume is 31.8% and 4. 7% respectively of that of the tree on trifoliate orange rootstock. The highest production per unit canopy volume is obtained from the trees on Ichange papeda No. 6,but the production per tree as well as per unit canopy shadow area is the highest in the trees on Ichang papeda No. 1. The fruit size and rind thickness of Hamlin orange on different Ichang papeda rootstocks are various. It is considered that Ichang papeda No. 1 would be used as a dwarfing rootstock and the possibility of Ichang papeda No. 6 being used as rootstock in high-density cultivation is also discussed.