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泡桐是河南省的主要栽培树种,群众喜爱,栽培普遍,全省每年育泡桐苗约一亿八千万株。由于育苗地不适,方法不佳,又一直采用种根无性繁殖,常留圃二至三年出圃,圃地病苗率由1978年前的1—3％,升高到5.7—16.7％,个别地块高达21.1％。因苗干低,达不到培养高干无节良材的目的,定植后平茬,发病率由5—7％,升高达7.6—12.6％,严重影响着泡桐生产的发展,而且浪费土地一倍。为了解决泡桐生产中这一实际问题,
Paulownia is the main cultivated species in Henan Province, the masses love, cultivation is common, the province paulownia Paulownia about 180 million each year. Due to the nursery area is not suitable, the method is not good, and has been the use of seed multiplication, often two to three years to nursery garden, nursery ground disease rate from 1-3% before 1978, increased to 5.7-16.7%, individual Lot up to 21.1%. Due to low seedlings, not up to the purpose of cultivating high and low yield, stubble after planting, the incidence of 5-7%, an increase of 7.6-12.6%, seriously affecting the development of Paulownia production, but also double the waste of land . In order to solve this practical problem in the production of paulownia,