Grain yield response index of bread wheat cultivars as influenced by nitrogen levels
Grain yield response index of bread wheat cultivars as influenced by nitrogen levels
复制标题
氮素水平对面包小麦品种籽粒产量响应指数的影响
DOI：
10.1016/j.aoas.2013.07.012
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发表时间：
2013
影响因子：
5.9
通讯作者：
H. M. Saed
中科院分区：
文献类型：
--
作者：
N. Noureldin;H. Saudy;F. Ashmawy;H. M. Saed
在2009/2010和2010/2011两个季节期间，在农业研究中心的吉萨农业研究站进行了两次田间试验。研究了吉萨-168、Sakha-94、Gemmeiza-10和Sids-12 4个面包小麦品种在不同施氮水平（0、25、50、75、100和125 kg N/fad）下的生产力。采用三次重复的条区设计。结果表明，供试小麦品种在两季的每平方米穗数、穗长、穗粒数、穗粒重、千粒重、籽粒产量和秸秆产量上存在显著差异。Gemmeiza-10沿着与Sids-12的千粒重仅在第二季超过其他品种。Gemmeiaza-10是产量较高的上级品种，但在第一季与Sakha-94持平，第二季与Sids-12持平。吉萨-168在第1季秸秆产量最高，而吉美扎-10沿着和Sids-12在第2季秸秆产量最高。在两个生长季中，增施氮肥至75 kg/fad可提高小麦的产量及其性状。除第一季穗粒数和第二季穗长外，其他产量性状均受品种与氮素水平互作的影响。使用Gemmeiza-10和施用50 kg N/fad记录了最大农学效率（AE）。产量反应指数表明，2009/2010年度吉萨-168和2010/2011年度Sids-12均属于高效反应型。
Two field experiments were conducted at Giza Agric. Res. Station, Agric. Res. Centre during the two seasons of 2009/2010 and 2010/2011. The study aimed to investigate the productivity of four bread wheat cultivars, namely Giza-168, Sakha-94, Gemmeiza-10, and Sids-12 under different nitrogen levels i.e. 0, 25, 50, 75, 100, and 125 kg N/fad. The strip-plot design in three replicates was used. The obtained results showed significant differences among the tested wheat cultivars in the two seasons for number of spikes/m2, spike length, kernels number/spike, kernels weight/spike, weight of 1000 kernels, and grain and straw yields/fad. Gemmeiza-10 along with Sids-12 produced the highest weight of 1000 kernels surpassing the other cultivars in the second season only. Gemmeiaza-10 was the superior cultivar for producing higher grain yield, but statistically leveled with Sakha-94 in the 1st season and with Sids-12 in the 2nd one. Moreover, straw yield of Giza-168 was higher than each of other cultivars in the 1st season, while Gemmeiza-10 along with Sids-12 gave the maximum straw yield in the 2nd season. Increasing N up to 75 kg/fad increased yield and its attributes of wheat in both growing seasons. All yield attributes significantly influenced by the interaction between wheat cultivars and N levels in both growing seasons, except kernels number/spike in the 1st season and spike length in the 2nd one. The maximum agronomic efficiency (AE) was recorded with Gemmeiza-10 and with application of 50 kg N/fad. Grain yield response index showed that each of Giza-168 in 2009/2010 and Sids-12 in 2010/2011 was belonging to efficient-responsive group.