在柑桔生产中,采用具有“一干三枝九条梢”的二级分枝优良大苗种植,成活率高,树冠形成快,早结果,早丰产,且节省大田管理人工,是柑桔生产的好经验。但是,在柑桔育苗工作中,要培育主干粗直径1厘米、高60厘米、一级分枝三条梢、二级分枝九条梢,即所谓“一千三枝九条梢”的优良大苗,往往从播种到出圃要经过三年以上的时间。为适应我场柑桔发展的需要,我队作了快速育苗的试验。一九七六年三月底采得酸桔种子回来,即于四月上旬播种,一九七七年春嫁接大红柑,还有少量早熟温州柑、四季桔、柳橙等共七千多株。一九七七年十一月检查,成活 In the production of citrus, it is a good practice to produce large seedlings of secondary branches with “three stems and nine shoots”, with high survival rate, rapid crown formation, early result, early yield and man-saving of field management . However, in citrus nursery work, to cultivate the trunk diameter of 1 cm, 60 cm high, a branch of three shoots, two branches of nine shoots, the so-called “Thirteen Nine shoots” of the good seedlings, often From planting to nursery to go through more than three years time. To meet the needs of the development of citrus field, my team made a rapid nursery test. At the end of March 1976, sour orange seeds were picked up, that is, sowing in early April, grafting red kumquat in the spring of 1977, and a small amount of more than 7,000 plants such as Wenzhou orange, Siji orange and orange. In November 1977, check and survive