脐橙炭疽病发生及其与环境因子关系调查初探

脐橙炭疽病首次在吉州区林业局果木试验场和兴桥镇长岭果园发现,对脐橙危害极大。该病主要危害脐橙的花、叶、枝、果。脐橙受害后,会引起落叶,枝梢枯死,枝干开裂,树势衰退,蒂枯落果,轻则影响果株生长发育,重则会造成秃株,甚至整株死亡。本文报道该病的症状、生物学特性、发生及其与气候、土壤、肥料、林龄及栽植方法等环境因子的关系,并提出对该病的防治意见和技术措施。

Investigation on Occuring of Navel Orange Anthracnose and Its Relation between Environmental Factors

The Navel orange anthracnose was found in experimental station of Jizhou District Forestry Bureau and the Changling orchard of Xingqiao Town for the first time,which had great harm to the navel orange.The disease hazarded the flowers,leaves,branches,fruit of navel orange.After be hazarded,navel orange will occur defoliation,dead shoots,branches cracked and vigor decline,pedicle dry and fruit drop,mild victims will affect the growth and development of fruit plants,severe victims will result in barren plants,and even whole plant to death.The symptoms,biological characteristics and occurrence of the disease were reported in this paper,as well as its relationship between climate,soil,fertilizer,tree age,planting methods and other environmental factors,the comments of disease prevention and control and technical measures were put forward.