【摘要】 为解决我国南方杨树造林苗木质量普遍不高和由此造成的造林质量不高的问题 ,利用美洲黑杨和欧美杨根系具有连续多年多次萌发的能力 ,将苗圃挖根起苗改为留根育苗 ,利用幼龄基干内根原基多和发生不定根能力强的特点 ,将带根苗造林改为截干打孔深栽造林 ,开展了杨树壮苗育苗技术和提高造林质量的新方法的研究 ,研究出杨树留根育苗和截干打孔深栽造林系列技术。该技术由于育苗和造林栽植方法的改进 ,不但提高了育苗和造林质量 ,而且降低了成本 ,经济效益好。同时因方法简便 ,易于为群众接受 ,已在长江中下游平原及滨湖地区广泛应用 ,大大扩大了杨树种植面积 ,在一定程度上丰富了我国杨树培育学的理论和方法。该系列技术在我国南方杨树速生丰产林基地建设中具有广泛的应用价值更多还原

【Abstract】 In order to solve the problems on the lower quantity of poplar seedlings generally and the mostly inadequate quantity of poplar plantation from it in the south of China,by means of making use of the ability of having continuously many years sprouting seedlings of Populus deltoids Bartr.and P.×euramericana (Dode) Guinier,a new seedling technique that the seedling used many years roots in garden instead of up root was studied;Making use of the strong ability of having more root primordium and producing adventitious roots many times that could be maintained many years continuously in small branch,the study on the poplar high quantity seedlings methodology and a new planting method of without root had been done.The result showed that a series technique of remaining roots seedlings and their deep stiletto planting for poplar had been made successfully.The technique not only increased the quality of seedling and afforestation,but also reduced cost and gained good economic benefit as for the improvement of seedling and planting method of poplar,at the same time,it could be easily accepted by the crowd to produce the positive to plant poplars because of the simple method and had been already applied extensively in Yangtze River middle low plain and strand lake regions and extended consumedly the area of poplar planting,it also enriched the poplar silviculture in a certain.The series technique had the extensive application value in the poplar planting in high yield plantation base development in the south of China.更多还原