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在早晚稻的两系法杂交稻、三系法杂交稻和常规稻中各选1个品种(组合),通过测定各品种的各生物学质量指标和营养指标,研究3类型水稻品种(组合)对二化螟Chilo suppressalis(Walker)危害的影响。结果显示,二化螟的危害株率随水稻株高、外径的增加而加重;二氧化硅含量高的早稻品种和含量低的晚稻品种,二化螟危害重;还原糖和酪氨酸含量高的品种二化螟危害均重。早稻湘早籼24号、金优974和陆两优996的二化螟危害株率为0.33%、0.39%和0.72%,且随着株高的增加而增加,随着二氧化硅含量的升高而加重。晚稻湘晚籼12号、金优217和两优527的二化螟危害株率为0.42%、0.86%和1.25%,且随着外径的增加、还原糖含量和酪氨酸含量升高而增加,随着二氧化硅含量的降低而增加。表明通过水稻的生物学质量和营养指标的检测可判定水稻品种对二化螟的抗性。
Three varieties (combinations) of two types of hybrid rice, three-line hybrid rice and conventional rice were selected in morning and evening rice, and their biological quality indexes and nutritional indexes were determined. Effect on Chilo suppressalis (Walker) Damage to Chilo suppressalis. The results showed that the damage rate of the stem borer was aggravating with the increase of plant height and diameter; the early rice varieties with high silica content and the late rice varieties with low contents of rice had severe damage; the contents of reducing sugar and tyrosine High varieties of stem borer damage are heavy. The damage rate of the rice stem borer, rice, Zaozaoxian 24, Jinyou 974 and Lu Liang You 996, was 0.33%, 0.39% and 0.72%, respectively, and increased with plant height. With the increase of silica content High and aggravating. The damage rate of rice stem borer was 0.42%, 0.86% and 1.25% for Late Rice Xiangnian23, Jinyou 217 and Liangyou 527, respectively. With the increase of outer diameter, the content of reducing sugar and tyrosine increased Increase with increasing silica content. This indicated that the resistance of rice varieties to the rice stem borer could be judged by detecting the biological quality and nutrition of rice.