摘要
通过人工播种的方法，研究了四川大头茶在不同覆土厚度以及不同枯叶覆盖下种子萌发及幼苗发生的差异。结果表明，在0．5cm，2cm和4cm三种覆土处理中，0．5cm覆土厚度情况下，幼苗发生及存活状况最好，不覆土或覆土过厚都不利于幼苗的发生及存活。枯叶主要通过改变幼苗发生的微环境而对种于萌发、幼苗发生及存活状况产生影响。撒播土表的种子较撒播枯叶表面的种子萌发情况好，随着枯叶覆盖层厚度的增加，幼苗发生数显著减少。
Artificial sowing was made of Gordonia acumimata to investigate the differences in its germination and seedling emergence at different depths of soil sealing and litter mulching.Of the soil sealing treatments, O. 5 cm sealing gave the best seedling emergence and survival.Both no-sealing and excessive sealing appeared unfavorable for the emergence of seedlings and their survival. Litter influenced seed germination and seedling survival through changing the micro-environment.Seeds germinated better when sown on soil surface than on the litter.The number of emerged seedlings decreased with an increase in depth of the litter cover.
出处
《西南农业大学学报（自然科学版）》
CSCD
1999年第6期500-504,共5页
Journal of Southwest Agricultural University
基金
国家自然科学基金!39330050
关键词
覆土
枯叶
幼苗发生
幼苗存活
四川大头茶
soil cover
litter
seedling emergence
seedling survival
Gordonia acuminata
