首页|水肥耦合对冬小麦产量、品质和氮素利用的影响研究

水肥耦合对冬小麦产量、品质和氮素利用的影响研究

Effects of the Coupling of Water-fertilizer on Winter Wheat Grain Yield and Its Quality and Apparent N Uses

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通过盆栽试验,对不同水肥条件下冬小麦的产量、品质和氮肥的表观去向进行了研究.结果表明,适宜供水、轻度亏缺和重度亏缺水分处理下产量达到最高点的氮肥施用量分别为345、274和201 kg/hm2,籽粒粗蛋白达到最大的施氮量分别为414、386和350 kg/hm2;氮肥效益的发挥与水分状况密切相关,水分严重亏缺时,氮肥的利用率低,残留和损失量较高;为获得较大的经济效益,用二次方程表述氮肥施用量和冬小麦产出的关系,获得不同水分条件下氮肥的经济施用量分别为308、234和147 kg/hm2.
Pot experiments were conducted in 2006 to study the effects of the coupling of water-fertilizer on winter wheat grain yield and its quality and apparent N uses. The results showed that under the different water levels of W1, W2 and W3, the N application rate for maximum grain yield was 345, 274 and 201 kg/hm2, and that for maximum grain crude protein content was 414, 386 and 350 kg/hm2. Nitrogen production efficiency was greatly related to moisture condition. At low water supplying levels (W3), the lowest N application rate and the highest N residual were obtained. Quadratic equation was used to describe the relation between the N application rate and the winter wheat grain yield, and the maximum economic rate of N fertilizer application was 308, 234 and 147 kg/hm2.

apparent N losescrude protein contentthe maximum economic rate of N fertilizer applicationN residues

汪玉磊、杨劲松、杨晓英

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中国科学院,南京土壤研究所,南京,210008

氮表现损失 粗蛋白含量 氮肥经济施用量 氮肥残留

国家高技术研究发展计划(863计划)国家科技支撑计划国家自然科学基金中国科学院知识创新工程项目

2006AA1002072006BAD05804407710g7kzcx2-yw-406-3

2008

灌溉排水学报
水利部农田灌溉研究所,中国农科院农田灌溉研究所 中国水利学会,国家灌溉排水委员会

灌溉排水学报

CSTPCDCSCD北大核心
影响因子：0.502
ISSN：1672-3317
年,卷(期)：2008.27(6)
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