8个脐橙品种(系)的适应性栽培

A preliminary study of cultivation for adaptability of eight navel orange strains.

引种８个脐橙品种（系）与锦橙、哈姆林甜橙同期栽培，在年均温１９２℃左右，海拔４００～６５０ｍ的生态条件下，发现长宁７５４比对照（ＣＫ）早熟２０ｄ左右，朋娜、清家比对照（ＣＫ）早熟８～１２ｄ，８个脐橙品种（系）中：朋娜、丰脐着果率高，分别为３４８％，３４４％，５～７年生树３年平均单株产量分别为１６１ｋｇ和１５８ｋｇ，接近于锦橙（ＣＫ）着果率３５％、产量１６５ｋｇ；脐血橙、纽荷尔产量适中，品质优良，全糖分别为８５％，８４％，含酸量分别为０７８％，０９６％，可溶性固形物分别为１２％，１１７％，均高于对照。

Eight Navel orange varieties and Jingchen, Hanlin were cultivated in the same period. The ecological conditions were that the mean annual temperature was 19 2 ℃ and the altitude was between 400-650 m. Chang Ling 75 4matured early about 20 days compared with CK. In eight Navel orange strains, the set fruit rates of Skaggs Bonanza and Fengqi were 3 48 % and 3 44 %, much higher than the others. Three year's yield per strain of Navel orange trees which grew 5-7 years were 16 1 kg and 16 5 kg,approaching Jingchen's set fruit rate of 3 5 % and mean strain yield of 16 5 kg. The yields of Washing ton sahguine and Newhall were moderate and quality fine. Their fructose, fruit acid and total soluble solid(TSS)were 8 5 % & 8 4 %,0 78 % & 0 96 % and 12 % & 11 7 % respectviely, much higher than CK.