摘要
对温室条件下的10个墨西哥柏种源幼苗进行施肥试验,并测定了其苗高、地径、叶片叶绿素含量和叶片N、P、K浓度。试验设3个处理水平:正常温室养护管理,为对照(CK);施用复合肥N、P、K质量比为1∶1∶1,总养分≥45%(T1);施用复合肥N、P、K质量比为4∶1∶1,总养分≥48%(T2);施用尿素(N 46%)(T3)。结果表明,10个墨西哥柏种源对不同施肥处理的吸收效率各不相同;施肥能显著促进墨西哥柏苗木的生长,不同施肥比例对生长指标的影响各不相同,其中T2>T3>T1;T1、T2处理水平很好的促进了叶绿素的积累,其中T1>T2,而T3对墨西哥柏叶绿素影响不显著;处理T2下的10个种源叶片N、P、K元素浓度与CK差异最显著,其次是T1、T3。
A fertilization trial under greenhouse condition was conducted on 10 cultivars Cupressus lusitanica seedlings. The seedling height, ground diameter, chlorophyll content of leaves and nitrogen, phosphorus and potassium concentration in leaves were determined. The trial had 4 treatment level ： Control （ CK, normal greenhouse maintenance） , appling compound fertilizer（ N： P： K = 1 ： 1 ： 1, total nutrient ≥45%, T1 ）, appling compound fertilizer（ N： P： K = 4：1 ： 1, total nutrient ≥48% T2） , appling urea（ N 46% ,T3 ）. The results showed that： The absorption rate of Cupressus lusitanica seedlings was different under different fertilizer treatments. Fertilizer could significantly improve seedling growth. The influence of different fertilizer ratio on seedling growth index was different （ T2 〉 T3 〉 T1 ）. The accumulation of chlorophyll was very well promoted by T1 and T2 treatments（ T1 〉 T2）. While the effect of T3 treatment on chlorophyll was not significant. There was a significant difference between T2 treatment and CK in nitrogen, phosphorus and potassium concentrations of seedling leaves from ten cuhivars. The next was T1 and T3.
出处
《林业科技开发》
北大核心
2012年第5期115-119,共5页
China Forestry Science and Technology
基金
国家林业局"948"项目"墨西哥柏引种"(编号:2009-4-17)
关键词
墨西哥柏
施肥
苗木生长
营养元素
Cupressus lusitanica
fertilizer application
seedling growth
nutrient elements
