摘要
试验于１９８７～１９９０年，在金华县油桐良种基地进行。在土壤施以一定量的氨磷钾配比肥料及一般管理水平的基础上，每年５月及７月对油桐叶片喷施不同浓度的硫酸亚铁水溶液，或在油桐树杆上钉入不同枚数的铁钉，并利用叶分析的方法对油桐进行了铁元素的营养诊断。结果表明：各不同处理之间的叶片全铁含量、桐果产量呈显著差异或极显著差异；油桐叶片上喷施硫酸亚铁水溶液与树杆上钉入铁钉的方法比较，其叶片中全铁含量及桐果增产的效果基本一致。本文给出了叶片中铁含量的临界水平值。
On the basis of general management with a fixed quantity of pro-portionated N-P-K fertilizers applied ir soil, a trial was conducted at theJinhua Base of Tnng Oil Superior Varietles in the years 1987～1990, in whichthe FeSO4 solution of different concentrations was sprayed onto the leavesof tung oil tree in May and July of each year or iron nails were driveninto the trunk of tung oil trees in order to diagnose nutritive condition ofFe in tung oil tree by use of leaf analysis. The results show ed that boththe total Fe content in the leaves and the fruit yield of tung oil tree dif-fered significantly or most significantly among different treatments and thatapplication of FeSO_4 solution to the leaves of tung oil tree was similar to thedriving of iron nails into the trunk in both total Fe content within theleaves and fruit yield increase. In addition, a critical value of Fe contentin the leaves was given.
出处
《浙江林学院学报》
CSCD
1994年第1期94-97,共4页
Journal of Zhejiang Forestry College
关键词
铁
根外施肥
产量
三年桐
Aleurites
iron
leaves
analysis
foliage fertilization
