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首页> 外文期刊>African Journal of Biotechnology >Genotype variation in grain yield response to basal N fertilizer supply among different rice cultivars
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Genotype variation in grain yield response to basal N fertilizer supply among different rice cultivars

机译：不同水稻品种基础氮素供应对籽粒产量的基因型差异

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Considering the great amount of basal N fertilizer but lower uptake ability at rice seedling, it was essential to increase the N use efficiency of basal fertilizer and reduce N pollution. So, a field experiment was conducted at Wuxi, China, under non-basal N and basal N fertilizer conditions, to identify the variation of grain yield response to basal fertilizer among 199 rice varieties with different genetic background, and finally choose the suitable rice varieties for us to increase basal N fertilizer efficiency and reduce N fertilizer pollution. The results show that highly significant genotype differences for grain yield and almost yield parameters existed in 199 rice varieties, and there were also great differences for agronomic N use efficiency (ANUE) and apparent recovery of applied basal N fertilizer (AR) among 199 rice varieties. Little response rice varieties HJY, 80-4, L454, SXJ, Daesong, WNZ and DXW2, and great response rice varieties NJ1X, HC106, QYDD, YTDBM, YJ2H, 4020 and 4024 were also screened in this study. Our results also show that the effects of basal fertilizer were mainly reflected on the early period of rice growth but not on the grain yield. This study identified genotype variation in grain yield response to basal N fertilizer supply and great ANUE and AY differences among the 199 rice cultivars, and also explored the reasons for these phenomena, which would provide us good information in increasing basal fertilizer efficiency and reducing N pollution.
机译：考虑到基础氮肥用量大，但对水稻幼苗的吸收能力较低，因此提高基础肥料的氮利用效率和减少氮污染至关重要。因此，在无锡和基础氮肥条件下，在中国无锡市进行了田间试验，以确定199个遗传背景不同的水稻品种对基础肥料的籽粒产量响应变化，最终选择合适的水稻品种。为我们提高基础氮肥效率，减少氮肥污染。结果表明，199个水稻品种在籽粒产量和几乎产量参数上存在着显着的基因型差异，在199个水稻品种中，农艺氮素利用效率和基施氮肥的表观回收率也存在较大差异。 。在本研究中，还筛选了响应性极差的水稻品种HJY，80-4，L454，SXJ，Daesong，WNZ和DXW2，以及响应性强的水稻品种NJ1X，HC106，QYDD，YTDBM，YJ2H，4020和4024。我们的结果还表明，基肥的作用主要反映在水稻生长的早期，而不是对谷物的产量。本研究确定了199个水稻品种对基础氮肥供应的籽粒产量基因型变化以及ANUE和AY差异很大，并探究了造成这种现象的原因，这将为我们提高基础肥料效率和减少氮污染提供很好的信息。 。

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