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泡桐具假二叉分枝的特性,造林时苗干高度即为成材主干的高度,这就大大影响了材积的生长.因此,人们为了培育泡桐高干良材多用第一年育苗、第二年造林、第三年平茬的方法来进行,但需要的时间较长.为了缩短这段时间,我们采用了栽后即平茬的方法培育泡桐树干,现已取得了较好的结果.一、试验内容和方法1.1984年冬从如皋县蚕种场引进良种泡桐450株,在灌南硕湖乡红星4组营造泡桐对比试验林30亩.苗木高低不一(2—3米),部分苗干弯曲细弱.于3月上旬齐地平茬.2.1984年春,在灌南硕湖乡硕湖6组营
Paulownia with false bifurcation characteristics, afforestation seedling height is the height of the main trunk, which greatly affected the volume of growth .Therefore, people in order to cultivate Paulownia high-dried multipurpose first year seedlings, the second year afforestation , The third year of stubble method to carry out, but takes longer time.In order to shorten this period of time, we have adopted the planted stubble method to cultivate Paulownia trunk, has achieved good results. Contents and Methods 1. In winter 1984, 450 strains of paulownia were introduced from the silkworm farm in Rugao County and 30 paulownia were planted in the 4 groups of paulownia irrigated in Shuoshuhu Township. The nursery stocks varied in height (2-3 m) Weak .In early March homogeneous ground stubble .2 1984 spring, irrigation in Shuo Shuo Shuo Township Shuohu Group 6