水稻纹枯病始发期和病情关键影响因子研究

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摘  要：为明确黑龙江省水稻纹枯病的始发期和病情扩展蔓延关键影响因子，利用4 a的纹枯病病情田间调查数据和气象数据，确定水稻孕穗期是纹枯病的始发期，使用SPSS软件分析结果表明，夜间大气温度是影响黑龙江省纹枯病病情的关键因子。

关键词：水稻；纹枯病；气象因子；病情指数；始发期

中图分类号：S435.111.4+2                        文献标志码：A文章编号：1673－6737（２０23）02－００27－０4

Study on Beginning Date and Disease Key Influencing

Factors of Rice Sheath Blight

LI Peng

（Institute of plant protection， Heilongjiang Academy of Land Reclamation Sciences， Harbin  150038， China）

Abstract： In order to clarify the beginning date of rice sheath blight and the key influencing factors of disease expansion and spread in Heilongjiang Province， the field survey data and meteorological data of rice sheath blight in four years were used. The results of SPSS software analysis showed that the booting stage of rice was the beginning date of rice sheath blight， and the night atmospheric temperature was the key factor affecting the disease of rice sheath blight in Heilongjiang Province.

Key words： Rice; Sheath blight; Meteorological factor; Disease index; Beginning date

目前水稻病害预警较多地依靠经验性方法，通常是对病害发生总体趋势进行定性研判和预测，这种相对粗放的方式难以满足绿色、精准植保防控对病害发生空间分布和时间过程的信息需求，无法有效指导植保防控作业的实施。（剩余3255字）