摘要
为了减少全国范围内不断出现的低温、晚霜等对核桃生产造成的危害,尤其是核桃栽培中普遍存在的新梢冻害现象,通过电导法和人工诱导法,对核桃1年生枝条的抗寒性做了初步研究。研究结果表明:核桃1年生枝条上各器官抗寒力表现为:木质部>叶芽>花芽;芽体的抗寒力在早、晚实品种间存在较大差异;成龄树枝条活性在-20℃低温时开始发生改变;不同低温伤害下早、晚实品种成龄树的枝条反应各有差异,-30℃时差异最明显。
In order to reduce the damage of nationwide low temperature and later frost to walnut production,especially widespread new shoot freezing injury phenomenon,cold resistance of annual branches in walnut was research though the electric conductance and artificial induction methods.The results showed that the order of the organs in annual branch was xylem,leaf bud,blossom bud based on cold resistance from high to low.The cold resistance of bud had bigger difference between early and late fruiting cultivars.The activity of mature branches began to change at-20 ℃.There were significant difference between cold resistances of mature branches in early and late fruiting cultivars under different low temperature treatments,and the most different treatment was-30 ℃.
出处
《经济林研究》
2010年第4期108-111,共4页
Non-wood Forest Research
基金
辽宁省科技攻关项目"沿海经济带及西北风沙区防护林体系建设技术研究与示范"(2008207002-01)
关键词
核桃
1年生枝条
抗寒性
walnut
annual branch
cold resistance
