关键词: 黄土高原丘陵区, 黄土高原丘陵区, 红枣, 气象灾害, 变化特征

Abstract: Bayberry brown spot disease is a common disease in major producting areas of Zhejiang. Discussing the occurrence and epidemic, monitoring and control technology, are of great significance to the comprehensive control of bayberry brown spot disease. Years of investigation and tests showed that bayberry brown spot disease occurs all over the year. There are 3 obvious peaks, around the spring, summer and autumn shoots germination periods, which are the key time for disease control. The results preliminarily ascertained the pattern occurrence and epidemic , and the relationship between the disease occurrence and cultivars, field management, climatic conditions. This research also developed monitoring and predicting methods for bayberry brown spot disease to establish the corresponding survey targets and approaches, and predicting methods for the disease occurring trends. Fungi-cide test showed that the relative control efficiencies of 33.5% Oxine – copper SC 1000 times, 1500 times, and 2000 times liquid spraying were 78.83%, 76.79% and 74.05%, respectively. Oxine – copper is bio-safe and has acquired certificate for pesticide registration, can be applied in large areas. To control the disease, this research also proposed a disease prevention strategy and an integrated control technique, combining agricultural control with chemical control.