庆阳市油松常发性针叶病害及绿色防控浅析

Analysis on Prevention and Control of Frequent Needle-leaf Diseases of Pinus tabulaeformis in Qingyang City

油松作为庆阳市人工造林的主要树种,造林面积大、分布广。庆阳局地油松目前已出现大面积针叶发黄、脱落等病变情况,其中:人工林油松幼树病害主要为松落针病并伴有松赤枯病,苗圃地油松幼苗则以松赤枯病为主。本文通过调查油松常发性针叶病害分布、受害状况,辨析病原菌种类并阐述主要症状表现特征,探析其发病原因,并提出科学、绿色的防控技术措施,为油松健康安全生长提供了有效的预防控制依据。

As the main tree species of artificial afforestation in Qingyang City,Pinus tabulaefprmis has a large afforestation area and wide distribution.Large area of P.tabulaefprmis has been found in Qingyang local plantation.Amomg artificial forest of P.tabulaefprmis:the disease of needle cast of conifers and Pestalotia funerea causead by Lophodermium conigenum and Pestalotiopsis funernea is the main disease,while in nursery land of P.tabulaefprmis especially in small seedlings,Pestalotia funerea was the main disease.In this paper,the distribution and victim status of common needle-leaf diseases of P.tabulaefprmis were investigated,the types of pathogenic bacteria were identified,the main symptoms and characteristics were expounded,the causes of the disease were analyzed.Besides,the scientific and green prevention and control techniques were used.This study analyzed the timely prediction and prediction of the frequent needle-leaf diseases of P.tabulaefprmis,provided scientific and reasonable green and efficient prevention and control measures,and stressed the effective prevention and control basis for the healthy and safe growth of P.tabulaefprmis.