新型改良材料必然会出现。
论述了煤灰作为土质改良材料的可行性。
The feasibility of coal ash used as soil improvement material is studied.
通过标记辅助选择获得的改良材料为三系杂交稻恢复系的培育提供了稻瘟病抗性亲本。
The improved lines can be used as candidate parental lines for rice breeding with blast resistance.
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