【摘要】 以连香树种子为试验材料,研究了播种覆土厚度与不同覆盖材料对出苗的影响,观察了苗期抗性,生长节律,调查总结年生长状况等。结果表明:以开沟覆土0.2cm出苗最高,播种覆土厚度0.2cm分别比覆土厚0.4、0.6cm提高出苗率36.6%和62.7%。相同播种深度不同覆盖措施条件下,以拱棚覆盖出苗效果好。经苗期抗性观测,当年苗6～7月高温期易发生叶面日灼,立枯病。生长结果,当年生苗生长缓慢,1a生平均高71cm,2a生为180cm,3a生为280cm。更多还原

【Abstract】 Sowing and seedling raising of Cercidiphyllum japonicum were conducted.Influences of sowing depth and mulching materials on germination were examined.The seedling resistance,growth rhythm,and the growth conditions were observed and summarized.The results showed that the highest gemination rate occurred in the sowing depth of 0.2 cm,36.6% and 62.7% higher than those of 0.4 and 0.6 cm,respectively.With the same sowing depth,the germination rate of arch shed with plastics was the highest.The leaves of current year seedlings were easy to be sunburn during June to July,and susceptible to Rhizoctonia solani.Seedlings grow slowly in the current year with an average height of 71 cm in the first year,180 and 280 in the second and third year.更多还原