龙眼微型高压育苗研究
Studies on Raising the Seedlings of Longan by Micro-Air-Layering Method
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摘要: 研究了采用细、短枝条不带土的龙眼微型高压育苗新技术:①双芽枝条(含二个节间)开始长根所需日数、抽新梢状况、移栽成活率等均与传统高压育苗的长枝条相近。②直径0.5~1.4cm的枝条均可长根,较细的枝条生根率有较高的趋势。③长根基质以脱脂棉和未脱脂棉各50%混合为宜,106d可开始长根,长根率达92.4%.④以浓度400mg/kg的IBA溶液处理枝条环状切口,104d后开始长根,长根率达92.2%,且能边长根边抽新梢。⑤微型高压苗长出二次根后即可从母树剪下移栽苗圃,科学管理10d后可长出新根,成活率可达85%以上,一年后苗高可达80cm左右即可出圃。Abstract: This study makes known that the new technique of raising seedlings of longan by micro-air-layering method which uses tender and short cutting without soil in the root-growing-matrix.①Two-Bud-Cutting can be employed, and the root-growing-days,the twig-tip-growing and the transplanting survival rate are neatly the same respectively as the traditional air-layering method that uses Iong cutting.②The cuttings,diameters are between 0.4cm and 0.7cm,grow roots well. And the smaller in diameter, the higher the root-growing rate.③The best root-growing-matrix is the mixture with half cotton and half degreasing cotton,and by using it the root-growing rate is 92.4%in 106 days.④The cutting,s circle wound should be treated with 400mg/kgIBA.The root-growing-rate is 92.2%in 104 days with twig tip growing at the same time.⑤After the second root growth, the seedlings of micro-air-layering can be cut from mother tree,then cultivat-ed in the nursery. Managed scientifically,the new roots can grow in 10 days and the survival rate reaches 85%and the height of seedlings can reach 80cm after one year.
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Key words:
- longan /
- raising the seedlings /
- micro-air-layering
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