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根据葡萄主要病虫害越冬前基数的调查,结合2013~2014年冬春季气候条件及近期葡萄病虫害情况等综合因素分析,宁夏农林科学院植物保护研究所日前对贺兰山东麓2014年葡萄主要病虫害发生趋势预报如下:一、葡萄霜霉病预计2014年发生早于常年,发生期有所延长,果实受害机率相对2013年有所加大,尤其是老果园、植株过密、地势低洼、郁蔽遮阴、偏施氮肥和树势衰弱的果园易造成霜霉病的发生。而幼龄果园相对发病程度较低。
Based on the investigation of the main pests and diseases before winter and the winter and spring climate conditions from 2013 to 2014 and the recent situation of grape diseases and insect pests, the Institute of Plant Protection of Ningxia Academy of Agriculture and Forestry recently predicted the occurrence trend of main pests and diseases in the grapevines in the eastern foot of Helan Mountain in 2014, As follows: First, grape downy mildew is expected to occur in 2014 as early as perennial, the occurrence period has been extended, the probability of fruit damage relative to 2013 has increased, especially the old orchards, plants too dense, low lying, Partial nitrogen fertilizer and tree orchard weakness can cause downy mildew. The relatively low incidence of young orchards.