| 周青云，王仰仁，叶澜涛，韩娜娜，李松敏.不同水肥处理下冬小麦干物质积累动态及模型研究[J].麦类作物学报,2013,33(3):555 |
| 不同水肥处理下冬小麦干物质积累动态及模型研究 |
| Study on The Dynamic and Models of Dry Matter Accumulation and Distribution in Winter Wheat under Different Water and Fertilizer Treatments |
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| DOI：10.7606/j.issn.1009-1041.2013.03.26 |
| 中文关键词: 冬小麦 干物质 水肥耦合 |
| 英文关键词:Winter wheat Dry matter Accumulation and distribntion |
| 基金项目:国家自然科学基金项目（50679055）；国土资源部公益性行业科研专项（201111015）。 |
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| 中文摘要: |
| 为了研究不同水肥处理对冬小麦干物质积累和分配的影响，在大田试验条件下，分析了四种水肥处理下冬小麦干物质积累与分配的动态变化。结果表明，不同水肥处理下，冬小麦干物质在全生育期内变化相似，总体表现为“慢 快 慢”的增长趋势。高水、中水处理的干物质净积累量(NDMA)和群体生长率(CGR)峰值均出现在拔节 抽穗期，而低水、零水处理（低水中肥、零水零肥）的NDMA和CGR峰值均出现在抽穗 灌浆期。不同的水肥处理条件下，冬小麦不同生育期干物质在根、茎、叶和籽粒中的分配比例变化显著。水肥胁迫严重时，在根中的分配系数增大，而在籽粒中的分配系数减小，从而影响产量；中水以及中、低肥水平下可以获得较高的籽粒分配比例。干物质的积累过程拟合精度排序为：三次曲线模型>Logistic模型>S曲线模型。 |
| 英文摘要: |
| In order to research the effect of different irrigation and fertilization on dry matter accumulation and istribution,four water and fertilizer treatments were conducted to study the dynamic of dry matter accumulation and distribution of winter wheat under the field experiment.The results showed that dry matter accumulation in different treatments had a similar dynamic in growing period of winter wheat, and the increasing trend is “slow fast slow”.The peak value of NDMA and CGR appeared at jointing heading stage.The partition coefficients of photosynthate distribution between root, stem, leaf and grain varied significantly under different water and nutrient stresses.Under severe water and nutrient stress, the partition coefficient of root increased and the partition coefficient of grain reduced.Grain distribution coefficient obtained higher under medium irrigation, medium or lower fertilizer levers.The sorting of fitting precision of dry matter accumulation was as Cubic curve model >Logistic model>S curve model. |
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