论文部分内容阅读
[目的]筛选出适宜安徽水稻生产的氮高效品种。[方法]以两优100、广两优6308和两优培九为试验材料,探讨高、低土壤地力下5个氮肥水平对水稻生产力的影响。[结果]随着施氮量的增加,2个地力水平下不同水稻品种的产量均呈先上升后下降的趋势。无论在高肥力土壤还是低肥力土壤,0、52、104 kg/hm~2水平下两优100和广两优6308的产量均显著高于两优培九;不同品种的产量差异主要由有效穗数和穗粒数共同决定的。以两优培九最佳经济产量为目标产量时,选择种植两优100或广两优6308可至少节约氮肥14.4%~18.5%。[结论]两优100和广两优6308在生产中具有较大的节肥潜力,将为安徽水稻高效优质生产提供技术支撑。
[Objective] The research aimed to screen out nitrogen efficient varieties suitable for Anhui rice production. [Method] With Liangyou100, Guangliangyou 6308 and Liangyoupeijiu as experimental materials, the effects of five nitrogenous fertilizers on rice productivity under high and low soil fertility were investigated. [Result] With the increase of nitrogen application rate, the yield of different rice varieties showed the trend of first increasing and then decreasing. The yield of Liangyou 100 and Guangliangyou 6308 were significantly higher than that of Liangyoupeijiu at 0, 52 and 104 kg / hm ~ 2, both in high-fertility soil and low-fertility soil. The number of particles together decide. With Liangyoupeijiu best economic yield as the target output, the choice of planting Liangyou 100 or Guangliangyou 6308 could save at least 14.4% ~ 18.5% of nitrogen fertilizer. [Conclusion] Liangyou 100 and Guangliangyou 6308 had greater potential for saving fertilizer in production and would provide technical support for efficient and high-quality rice production in Anhui.