摘要
根据宁夏枸杞主产区中宁县和银川市芦花台园林试验场2000～2004年不同批次的成熟构杞果实炭疽病病情指数和气象资料。运用主成分分析结合逐步回归方法。分析了宁夏枸杞炭疽病爆发沈行的主要气象因子及其影响。结果表明：影响炭疽病发生的气象因子主要是温度和空气相对湿度。其次是风力和降水。在一定温度范围内，温度越高。对炭疽病的发生越不利；空气湿度越大。越有利于枸杞炭疽病的发生。
Based on sampling data from Zhongning county and Luhuatai horticultural farm of Yinchuan city in different dates,weather condition and its influence on epidemic of Colletotrichum gloeosporioides Penz were analyzed by using the method of principal components analysis and stepwise regression. The results showed that temperature and air humidity were key factors which impact on Colletotrichum gloeosporioides Penz epidemic, The second factor was wind and precipitation. The higher the temperature during fruits developing stage of medlar,the slighter the Colletotrichum gloeosporioides Penz occurred. However, the higher the air humidity during fruits developing stage of medlar, the heavier the Epidemic of Colletotrichum gloeosporioides Penz.
出处
《干旱地区农业研究》
CSCD
北大核心
2007年第1期181-184,共4页
Agricultural Research in the Arid Areas
基金
科技部社会公益项目"宁夏枸杞黑果病发生和爆发流行的气象条件关系及预报方法研究"(2002DIB50127)
关键词
枸杞
炭疽病
气象因子
主成分分析
Lycium barbarum L.
Colletotrichum gloeosporioides Penz
weather condition
principa components analysis
