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本文为了把水稻品种抗虫性作为一个参量应用在稻纵卷叶螟系统分析中,根据水稻品种对纵卷叶螟的抗性鉴定结果,将幼虫危害的卷叶率作为品种的抗性指标,把某一品种和标准品种的卷叶率比值“V”作为该品种抗性的参量,再将这一参量作为一个系数放入稻纵卷叶螟系统模型中,即可计算出该品种上稻纵卷叶虫螟在某一年的种群数量及危害程度。使品种成为制订防治决策的重要依据,提高测报准确度。但此参量仅考虑到品种的选择性和抗生性,对于耐害性还有待进一步试验与完善。
In order to apply the insect resistance of rice variety as a parameter in the systematic analysis of C. medinalis, according to the identification results of resistance of rice varieties to C. medinalis, the percentage of leaf-roll affected by larvae was taken as the resistance index of varieties, The percentage of leaf-rolling rate of a variety and standard variety was used as the parameter of resistance of the variety, and then the parameter was put into the model of rice leaf roller as a coefficient to calculate the variety of rice The population and damage degree of the leaf-roll moth in a certain year. Make variety an important basis for formulating prevention and control decisions and improve the accuracy of reporting. However, this parameter only takes into account the selectivity of the species and antibiotic resistance, yet further testing and improvement of the toxicity.