摘要
通过对红花檵木进行干旱、高温、低温、水涝、遮阴等胁迫处理,研究逆境胁迫对其生长发育的影响。结果表明：红花檵木耐干旱能力强,当出现干旱时叶片自我保护性萎蔫,在土壤含水率低至10．5%时,仍可生长;耐高温能力较强,在40℃时能正常生长,在45℃环境条件下安全生存;红花檵木较耐寒,在-14℃的低温下能安全越冬,根系的耐寒性强于枝叶,可推广到年最低气温为-14～-16℃的地区,低于-16℃要进行防冻处理;耐水涝能力很强,在滞水中能生存10～12d,流水中生存40d以上;红花檵木属中性偏阳性树种,光照度在2．0×10^4 lx以下时,生长不良,开花少,光照度大于5．0×10^4 lx时,生长发育正常。
Growth and development conditions of Loropetalum chinense var. rubrum yieh under stress conditions are studied, such as drought, high or low temperature, water logging, shade. The results show that it has so high drought resistance that its leaves will wilt automatically in case of drought and can grow under soil water content of below 10. 5%; it has so strong high temperature resistance that it can grow normally at 40℃ and safely survive at 45℃ ; it has so high coldness resistance that it can live through the winter at -14℃, and can be spread to the areas where the lowest temperature may reach 14～16℃ below zero, but it will need frostbite prevention at a lower temperature, it has so high water logging resistance that it can survive 10～12 days in still water and more than 40 days in running water; it grows badly with little blooming when the light intensity is under 2. 0 × 10^4 lx, but grows normally above 5. 0 × 10^4 lx.
出处
《经济林研究》
2007年第2期31-34,共4页
Non-wood Forest Research
基金
原国家林业部重点课题"珙桐
红花檵木等林区特有稀有花卉品种资源开发利用研究"(96-14).
关键词
红花檵木
耐高温性
耐寒性
耐旱性
耐涝性
耐阴性
Loropetalum chinense var. rubrum yieh
high temperature resistance
coldness resistance
drought resistance
water logging resistance
shade resistance
