砧木对果树的生长、结果、产量、品质以及抗逆性等均有很大影响。在柑桔生产上,既要有优良的接穗品种,还要有优良的砧木品种,才能获得良好的栽培效果。为此,我们将暗柳橙和桠柑嫁接在不同的砧木品种上,作了比较试验。其目的,为找出一些早结果、早丰产、质优、抗黄龙病和抗逆性强的砧木品种,以供生产上应用。试验所用砧木种子于一九六三年播种,一九六五年嫁接,一九六七年春定植。试验地为红壤土,按单行一次排列,不设重复。在一般管理水平下,一九七○年开始结果。从植株生长情况和果实产量、品质的比较观察,各砧木品种的经济 Rootstocks have great influence on the growth, fruit yield, quality and resistance of fruit trees. In citrus production, it is necessary to have good scion varieties, but also have good varieties of rootstocks, in order to obtain good cultivation. To this end, we will dark orange and orange grafted on different rootstock varieties, made a comparative test. Its purpose is to find out some early results, early yield, good quality, resistance to Huanglongbing and resistant varieties of rootstock for production applications. The rootstock seeds used in the experiment were sown in 1963, grafted in 1965, and planted in the spring of 1967. Test for the red soil, according to a single row, without duplication. Under the general management level, the result started in 1970. From the growth of plants and fruit yield, quality comparison, the economy of various rootstock varieties