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当前位置: 首页 > 文章 > 水氮互作对春小麦植株养分含量及产量的影响 西北农业学报 2011,20 (6) 90-95
Position: Home > Articles > Effect of Water and Nitrogen Interaction on Plant Nutrients and Yield of Spring Wheat Acta Agriculturae Boreali-occidentalis Sinica 2011,20 (6) 90-95

水氮互作对春小麦植株养分含量及产量的影响

作  者：
董博;于显枫;张绪成;郭天文;张东伟
单  位：
甘肃省农业科学院旱地农业研究所
关键词：
水氮互作;植株养分;产量;春小麦
摘  要：
以春小麦宁春4号为材料,采用随机区组设计,研究水氮互作对春小麦植株养分含量及产量的影响。结果表明:(1)在丰水和干旱条件下,小麦叶片的全N含量表现为高氮处理>中氮处理>不施氮处理;在严重干旱条件下,中氮处理的最高;在拔节期和灌浆期,高氮处理的却最低。表明施氮能提高小麦对氮素的吸收积累,改善其分配状况。(2)与不施氮相比,施氮能提高植株磷素积累量,中度干旱条件下,扬花期对照和中氮处理小麦植株含磷量显著高于高氮处理;严重干旱下,灌浆期中氮处理的小麦植株含磷量最高,但其他生育期均以高氮处理为最高;中氮条件下,拔节期和抽穗期中度干旱的小麦植株全磷含量最低,而扬花期中度干旱的最高,灌浆期随着水分胁迫的加剧而减小;高氮条件下,扬花期小麦植株全磷含量为严重干旱的最高,灌浆期中度干旱的最高。(3)在氮素一定的条件下,随着干旱胁迫的加剧,小麦植株全K含量减小;3个水分条件下,小麦叶片含钾量无明显差异。千粒质量、穗粒数和穗粒质量均以高氮处理最大;3种氮素营养水平下,小麦千粒质量和每盆穗粒质量均是中度干旱的最高。
译  名：
Effect of Water and Nitrogen Interaction on Plant Nutrients and Yield of Spring Wheat
作  者：
DONG Bo1,2,YU Xianfeng1,ZHANG Xucheng1,2,GUO Tianwen1 and ZHANG Dongwei1(1.Institute of Dry Land Agriculture,Gansu Academy of Agricultural Sciences,Lanzhou 730070,China;2.Key Laboratory of Northwest Drought Crop Cultivation and Farming,Key Laboratory within Ministry of Agriculture People's Republic of China,Lanzhou 730070,China)
关键词：
Water and nitrogen interaction;Plant nutrition;Yield;Spring wheat
摘  要：
The random block design experiment of water and nitrogen with three levels each was conducted to explore the effect of water/nitrogen interaction on plant nutrients and yield of spring wheat variety Ningchun 4.The main conclusions of the study were summarized as follows:(i)Under well-watered and dry conditions,from jointing stage to heading stage,the content of total nitrogen in wheat leaves were listed as high-nitrogen(HN)>middle nitrogen(MN)>zero-nitrogen(CK).However,under serious dry condition,the content of total nitrogen was the highest in the middle nitrogen(MND) treatment,and the lowest in the treatment of high-nitrogen(HND),which indicated that increasing nitrogen fertilizer can improve the accumulation of nitrogen in wheat leaves.(ii) Compared with no nitrogen treatment,nitrogen application can improve accumulation quantity of phosphorus in wheat plants.Under moderate drought conditions,phosphorus contents in wheat plants in CK and middle-nitrogen treatment were detected significantly higher than high-nitrogen treatment at flowering stage;Under the serious drought conditions,the highest phosphorus was detected in the middle-nitrogen treatment at ripening stage;but at other stages,the highest phosphorus were in high-nitrogen treatment;(iii)in the same nitrogen level,potassium content in plant leaves decreased with the severity of drought stress;Under three moisture conditions,potassium content has no significant difference,But the high-nitrogen treatments had the maximum in 1000-grain weight,grains per spike and grain weight per spike.Under the condition of three nitrogen levels,the middle drought treatments had the highest value in 1000-grain weight and spike grain weight per pot.

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