【摘要】 利用田间自然发病条件,以俄罗斯大果沙棘为材料,采用随机区组设计,研究了5种肥料对沙棘干缩病发病率的影响。结果表明:沙棘干缩病在田间的症状有不同表现型,即干枯型、根腐型、枯叶型。试验的2 a间,未做任何处理的树木,平均发病率在30%左右。通过沙棘干缩病发病率进行统计分析,发现不同肥料品种对沙棘干缩病的发病率的影响有显著差异,其中钙肥、叶面肥可显著降低沙棘干缩病的发病率。更多还原

【Abstract】 Under field conditions,taking Russian seabuckthorn as materials,effect of 5 kinds of fertilizers on incidence of dry shrink of seabuckthron were studied.Result shows that symptoms of dry shrink of seabuckthron have different phenotype: withered and death type,root rot type,litter type.The average incidence of trees without treatment is 30%during the two years’ experiments.Statistical analysis on incidence of dry shrink of seabuckthron were conducted.It was found that different fertilizers have significant differences on incidence of dry shrink of seabuckthron,among them calcium & foliar fertilizer can significantly decrease the incidence of dry shrink of seabuckthron.更多还原