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63杨(Populus xeuramrlcana Hav-ravd)是南方生长速度最快的一种杨树,目前已在我省很多地区引种栽培,但扦插成活率低,一般仅有50～70%.其主要原因是63杨生长期很长,从4月中旬萌动展叶到12月中、下旬落叶,生长期长达240天以上.秋梢生长量大,组织不充实,木质化程度低,易失水.针对这一生理特点,在79年扦插中,我们采取了一系列技术措施,收到了较好的效果,使15亩63杨扦插成活率提高到97.4%以上.现将扦插技术措施简介如下:
Populus xeuramrlcana Hav-ravd Populus xeuramrlcana Hav-ravd (Populus xeuramrlcana Hav-ravd) is the fastest growing poplar in the south and has been introduced in many areas of our province at present, but the survival rate of cuttings is low, usually only 50-70% Young growth period is very long, from mid-April germination leaf exhibition to mid-December, late fall, the growth period of up to 240 days or more. Autumn shoot growth, tissue is not rich, low degree of lignification, water loss. A physiological characteristics, in the 79 years of cutting, we have taken a series of technical measures, received good results, 15 acres 63 Poplar cuttings survival rate increased to more than 97.4%. Now the cutting technology measures are as follows: