摘要
通过对杭州市钱塘江北岸滨海地区黄化樟树喷施不同铁肥,研究樟树叶片主要因子变化规律。结果表明,叶片的全P含量为对照>FeCl3>FeSO4.7H2O>柠檬酸铁>FeEDTA>硫酸亚铁铵,活性Fe、过氧化物酶、全Fe、全K、全N、过氧化氢酶和SPAD值正好相反。各铁肥均减少了叶片的全P含量,增加叶片其余养分和生理指标含量,增加高低顺序为活性Fe>过氧化物酶>全Fe>全K>全N=过氧化氢酶>SPAD值。不同取样时间养分变化规律性较强,SPAD值、过氧化氢酶、过氧化物酶、全N和全K变化规律一致,均随取样时间呈逐渐增加的趋势;不同处理养分变化规律性也较强,活性Fe、全Fe、SPAD值、过氧化氢酶、过氧化物酶、全N和全K变化规律一致;全P与活性Fe之间表现为拮抗作用,其余养分和生理指标含量与活性Fe之间表现为增效作用。
The changes of nutrients content in the main leaf of chlorosis camphor tree were studied after spraying iron fertilizer in the coastal region located in the north shore of the Qiantang River. Results indicated that leaf total P content was CK 〉 FeCl3 〉 FeSO4- 7H2O〉 iron citrate 〉 FeEDTA 〉 ammonium ferrous sulfate, but active Fe, peroxidase, total Fe, total K, catalase, total N and SPAD value were on the contrary. Compared with the experimental control, all iron fertilizers reduced leaf total P content, but they increased the contents of remaining elements and physiological indexes, the increased order were active Fe 〉 peroxidase 〉 total Fe 〉 total K 〉 catalase = total N 〉 SPAD value. Law of different sampling times were evident, SPAD value, catalase, peroxidase, total N and total K were unanimously, and it was a growing trend with the sampling time; Law of different treatments were evident too, active Fe, total iron, SPAD value, catalase, peroxidase, total N and total K were the same. The results also showed that total P was antagonism with active Fe, while the remaining elements and physiological indexes were synergy.
出处
《福建林学院学报》
CSCD
北大核心
2009年第4期368-373,共6页
Journal of Fujian College of Forestry
基金
国家科技支撑项目(2008BADA4B03)
Harvest Plus-China国际合作项目(I20060055)
杭州市下沙经济技术开发区科研项目(H20060653)
关键词
喷施
铁肥
黄化
樟树
叶片
spraying
iron fertilizer
chlorosis
camphor tree
leaf
