【摘要】 阐述大青杨优良无性系苗木繁育及栽培技术。苗木培育以扦插育苗为主,育苗地应选择地势较为平坦,排水良好,具有灌溉条件,土壤比较肥沃疏松的壤土或沙壤土为好;种条采集应在晚秋至早春苗木休眠期内进行,最好采用一年生平茬苗干,选无病虫害、生长健壮、水份充足、冬芽饱满的枝条做种条,插穗的长度12~15 cm为宜。扦插时间一般当天最高气温大于16℃时即可进行。可采取高床或垄式扦插,扦插时最好覆膜。造林时采用"根苗"造林。幼林抚育根据造林《规程》采取3、2、2、1次抚育。造林后结合头2次幼林抚育及时定干,每株保留1个健壮的萌条,否则影响生长。更多还原

【Abstract】 The seedling breeding and cultivation technology of Populus ussuriensis was discussed.Seedlings were mainly cultivated with cutting propagation,and the breeding land should be chosen in relatively flat terrain with good drainage and irrigation conditions,in which fertile and loose loam or sand loam was best.The branches should be collected during seedling dormancy period from late autumn to early spring and the annual stumping ones with abundant water and full winter buds were best,which should be pest-free and growing healthily.The suitable cutting length was 12～15 cm.Generally,high-bed or ridge cutting was adoptable,which could be conducted when intraday maximum temperature was higher than 16℃ and needed covering with film."Root" forestation was applied and the young plantation was tended 3,2,2,1 times according to afforestation regulations.Headed trunk should be carried out timely after forestation combined with first two times tending.Each plant retained a strong branch,or its growth would be affected.更多还原