论文部分内容阅读
白皮松是我国优良的园林绿化树种。白皮松针枯病为传染性病害,发病时间为5月～7月,侵染当年新针叶中上部;病状表现为叶枯、叶稀、叶短,秃梢甚至整株死亡,枝梢顶部较下部明显严重;土壤中的总盐度和碱度与针枯病无明显相关性;中度以上发病植株以绿乳铜或波尔多液进行化学防治为最适药剂。本文结合实际工作讨论了白皮松针枯病病原、病因及综合防治。
Pinus bungeana is an excellent landscape tree species in our country. White bark needle blight is a contagious disease, the onset time is from May to July, the upper part of the new needle in the year of infection; the symptoms are leaf blight, leaf thin, short leaves, bald or even whole plant death, The lower part was obviously serious; the total salinity and alkalinity in the soil had no obvious correlation with the needle-tip blight; the more moderate the above-mentioned plants took the chemical control of the green milk or Bordeaux mixture as the optimum medicament. In this paper, with the actual work to discuss the white bark needle pathogen, etiology and comprehensive prevention and treatment.