The Effect of Different Nitrogen Sources from Urea and Ammonium Sulfate on the Spikelet Number in Egyptian Spring Wheat Cultivars on Well Watered Pot Soils
The Effect of Different Nitrogen Sources from Urea and Ammonium Sulfate on the Spikelet Number in Egyptian Spring Wheat Cultivars on Well Watered Pot Soils
复制标题
DOI：
10.1626/pps.15.332
复制
发表时间：
2012-10-01
影响因子：
2.5
通讯作者：
Kobata, Tohru
中科院分区：
文献类型：
--
作者：
Hafez, Emad El Den Maher Mohamed;Kobata, Tohru
小穗数是决定小麦开花前产量的重要因素。我们的目的是确定氮素（N）的影响，从尿素和硫酸铵分开施加在开花前在最近的埃及品种Sakha93和Sakha94和两个常用的品种在盆中的SPN上以不同的比率。四个品种的SPN对硫酸铵施氮的反应均高于尿素施氮。然而，有没有在任何品种的SPN吸收从两种肥料的N的反应没有差异。单施氮量和单吸氮量均以Sakha94最高。这些品种间净光合速率的差异主要是由于穗数的差异造成的。结果表明，在最近的埃及品种中，硫酸铵中的氮对SPN的影响大于尿素。
The spikelet number (SPN) is an important wheat yield component decided before anthesis. Our objective was to determine the effect of nitrogen (N) from urea and ammonium sulfate split-applied at different rates before anthesis on the SPN in the recent Egyptian cultivars Sakha93 and Sakha94 and two commonly used cultivars in pots. The response of SPN to applied N from ammonium sulfate was higher than that from urea in all four cultivars used. However, there was no difference in the responses of SPN to absorbed N from the two fertilizers in any of the cultivars. The SPN per applied and absorbed N was the highest in Sakha94 among the four cultivars. These cultivar differences in the SPN were due to the difference in the spike number. The results suggested that the N from ammonium sulfate has a greater effect on SPN than that from urea in recent Egyptian cultivars.