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首页> 外文期刊>Plant, Soil and Environment >Effects of increased ammonia on root/shoot ratio, grain yield and nitrogen use efficiency of two wheat varieties with various N supply.
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Effects of increased ammonia on root/shoot ratio, grain yield and nitrogen use efficiency of two wheat varieties with various N supply.

机译：氮增加对两种氮素供应不同的小麦品种根冠比，籽粒产量和氮素利用效率的影响。

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摘要

The effects of elevated atmospheric NH3 on growth and yield parameters of two winter wheat varieties, the high water and fertilizer-demanding variety Xiaoyan 6 (XY6) and the drought-resistant variety Changhan 58 (CH58), grown with two levels of N fertilization, were studied in Open-Top Chambers. The results showed that in combination with the high N treatment increasing the atmospheric NH3 concentration to 1000 nl/l from the ambient level of 10 nl/l NH3 significantly (P<0.05) reduced the biomass and the root/shoot ratios of the plants, especially in XY6 plants, mainly because it negatively influenced root biomass production at anthesis and mature stages. In addition, the grain yield of XY6 was by 1.51% higher, while that of CH58 was 13.2% lower, following exposure to the elevated atmospheric NH3 concentration rather than the ambient concentration in combination with the high N treatment. In contrast, in combination with the low N treatment, elevated atmospheric NH3 had significantly and non-significantly positive effects on the grain yield of XY6 and CH58 plants, respectively. The Nitrogen Use Efficiency (NUE) and related parameters were all lower in plants of both varieties exposed to the high atmospheric NH3 concentration together with either the high or low N treatment.
机译：大气中NH 3 的升高对两个冬小麦品种的高产和产量参数的影响，高水分和高肥料需求品种小6 6（XY6）和抗旱品种昌汉58（CH58），在开放式房室中研究了两种氮肥水平下生长的小麦。结果表明，与高氮处理相结合，可使大气中NH 3 的浓度从周围环境的10 nl / l NH 3 显着增加至1000 nl / l（< i> P <0.05）降低了植物的生物量和根冠比，尤其是在XY6植物中，这主要是因为它对花期和成熟期的根系生物量产生不利影响。此外，在暴露于升高的大气NH 3 浓度而不是环境浓度以及高氮的条件下，XY6的籽粒产量提高了1.51％，而CH58的籽粒产量降低了13.2％。治疗。相反，结合低氮处理，升高的大气NH 3 对XY6和CH58植物的籽粒产量分别具有显着和非显着的正效应。暴露于高浓度NH 3 以及高氮或低氮处理的两个品种的植物中的氮利用效率（NUE）和相关参数均较低。

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