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以湖北农业科学院选育的两个水稻品种培两优986和培两优3076为材料,研究了其在中氮和较高氮水平下的氮肥利用率和农学效率。结果表明,在中氮水平下,两个品种的氮肥利用率都相对较高,达27%;而在较高氮水平下,两个品种的氮肥利用率都比较低;在两个供氮水平之间氮肥农学效率培两优986没有差异,而培两优3076则差异明显。
Two rice cultivars, Peiliangyou 986 and Peiliangyou 3076, bred from Hubei Academy of Agricultural Sciences, were used to study their nitrogen use efficiency and agronomic efficiency under medium and high nitrogen levels. The results showed that under the medium nitrogen level, the nitrogen use efficiency of the two cultivars was relatively high, reaching 27%; while under the high nitrogen level, the nitrogen use efficiency of the two cultivars was relatively low. Under the two nitrogen levels There was no difference in the efficiency of nitrogenous fertilizer Peiliangyou 986, while Peiliangyou 3076 showed significant difference.