CAJ | 학술논문

对美国山核桃(Carya illinoensis)进行不同粗度根段和不同ABT6浓度浸泡处理育苗试验,结果表明,各处理苗木高度、地径、出苗率均与实生苗对照表现出显著性差异,种根粗度减小,各指标均呈现下降趋势.>1.2～1.6 cm径级根段的出苗率和苗木地径最大,分别达到67.5%和0.52 cm,苗木高度则以>0.8～1.2 cm粗度径级根段最大,为14.98 cm,但无论苗木地径还是苗木高度均小于同期播种的实生苗,苗高仅为对照(31.40cm)的47.73%,地径仅为对照(0.72 cm)的71.68%.采用根段育苗虽可节省种子成本,但苗木生长相对较为纤弱,需培育多年才能达到当年实生苗的平均水平,且取根不易,不适于规模化扩繁.因此,从工效、成本和生长情况综合考虑,美国山核桃育苗应优先选择种子繁殖而非根段育苗.
대미국산핵도(Carya illinoensis)진행불동조도근단화불동ABT6농도침포처리육묘시험,결과표명,각처리묘목고도、지경、출묘솔균여실생묘대조표현출현저성차이,충근조도감소,각지표균정현하강추세.>1.2～1.6 cm경급근단적출묘솔화묘목지경최대,분별체도67.5%화0.52 cm,묘목고도칙이>0.8～1.2 cm조도경급근단최대,위14.98 cm,단무론묘목지경환시묘목고도균소우동기파충적실생묘,묘고부위대조(31.40cm)적47.73%,지경부위대조(0.72 cm)적71.68%.채용근단육묘수가절성충자성본,단묘목생장상대교위섬약,수배육다년재능체도당년실생묘적평균수평,차취근불역,불괄우규모화확번.인차,종공효、성본화생장정황종합고필,미국산핵도육묘응우선선택충자번식이비근단육묘.
Experiment was conducted on seedling cultivation by root of Carya illinoensis with different size of root and treated by different concentration of ABT6 in the demonstration bases of Jiande city, Zhejiang province. The results showed that the seedling height, basal diameter, seedling rate of treated by ABT6 had significant difference with the control, and had positive relation with diameter of mother root. Seedling rate and basal diameter from mother root of 0.8-1.2cm could top to 67.5% and 0.52cm. Seedling height reached 14.98 from mother root of 0.8-1.2. But basal diameter and seedling height form mother root was only 71.68% and 47.73% of that from seed. Compared to seedling cultivation by seed, that by root had disadvantages such as weak growth and difficult to get mother root. Therefore, seedling cultivation from seed was recommended.