地膜覆盖培育毛白杨壮苗的技术研究

Study on the Technology of Breeding Strong Sprout of Populus tomentosa with Plastic Film Mulching

毛白杨地膜覆盖扦插育苗试验结果表明：地膜覆盖苗１ａ出圃率比ＣＫ提高１４１％，生根、发芽期分别提前１５ｄ，６ｄ，成活率、平均苗高、地径分别提高２２％，２２％，２５８％地膜覆盖苗根系发达，总长度、平均根直径分别比ＣＫ长８２４ｍ，直径大０４８ｃｍ；根、茎、叶生物量分别比ＣＫ提高６２５％，６００％。

The result of cuttage seedlings with plastic film mulching of Populus tomentosa indicated that the rate of seed plot with plastic film mulching was 12.1% hihger than that of the contrast.The strike root and germination period were respectively quickened by 15d and 6d.The survival rate,average height and diameter increasd by 22%,22% and 25.8% respectively.The root system flourished.The total length was 8.24m longer than that of the contrast.The average root diamerter was 0.48cm longer than that of the contrast.The biomass of root,stalk and leaf,compared with that of the contrast,increase by 62.5%,60% and 22.8% respectively.