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稻瘟病 Pyricularia oryzae Cauara 是威胁我国水稻产量的主要病害之一,实践证明要切实控制该病的发生首先要认真做好测报工作,测准才能防好。笔者通过较长时间的试验、验证,对稻瘟病的预测工作有较深的体会,现将几种预测方法介绍如下,供研究和参考.1.利用指示品种叶瘟率预测穗瘟,仍然是当前中、短期预测中比较切实可行的方法之一。特别是通过全年不同生育期叶瘟率与穗瘟相关性的测定,进一步明确到孕穗末期叶瘟率
Pyricularia oryzae Cauara is one of the major diseases that threaten rice production in China. Practice has proved that it is necessary to conscientiously do a good job in reporting the disease before taking effective measures to prevent it. The author through a longer period of testing, verification, the blasting of the work have a deeper understanding of the prediction, are now introduced several forecasting methods are as follows, for research and reference.1.Using the indicated variety leaf blast rate forecast panicle blast is still One of the more practical ways in current mid-term and short-term forecasts. In particular, the determination of the correlation between leaf blast rate and panicle blast at different growth stages throughout the year further clarified the rate of leaf blast at the end of booting stage