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本文运用苗期抗性筛选法,测定了9个水稻品种对褐稻虱的抗性及其与秧龄的关系,表明秧龄对高抗品种的抗性表现影响不显著,而部分中抗品种的抗性则随秧龄增长而加大。抗性机制研究证明:高抗品种7105具有很强的不嗜性和抗生性;而包选2号和辐包矮21等中抗品种则以耐虫性为主,兼有不同程度的抗生性。
In this paper, seedling resistance screening method was used to determine the resistance of nine rice cultivars to BPH and their relationship with seedling age, indicating that seedling age has no significant effect on the resistance of high resistant varieties. However, Sex increases with the growth of seedling age. Studies on the mechanism of resistance showed that the high resistant variety 7105 had strong cytotoxicity and antibiotic resistance, while the middle resistant varieties such as No.2 package and No.22 were resistant to insects and both had different degree of antibiotic .