| 不同种植密度下甜玉米氮磷钾养分吸收量差异研究 |
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| 引用本文： | 赵荣芳.不同种植密度下甜玉米氮磷钾养分吸收量差异研究[J].中国农学通报,2015,31(21):43-46. |
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| 作者姓名： | 赵荣芳 |
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| 作者单位： | 仲恺农业工程学院 |
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| 基金项目： | 广东省科技计划项目农业攻关项目“高产高效甜玉米最佳养分管理技术研究、示范与推广”（项目编号：2012B020301005） |
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| 摘 要： | 采用单因素田间试验，对不同种植密度对甜玉米产量和氮磷钾吸收量的影响进行了研究，以期为高产、优质、资源高效、环境保护等多重目标并重的最佳养分资源管理提供理论依据。结果表明：低密度（51282株/hm2）、中密度（61538株/hm2）和高密度（76923株/hm2）下，甜玉米鲜苞产量分别为9179、10285、11664kg/hm2；氮磷钾养分施用量相同的情况下，低密度、中密度和高密度下，甜玉米收获期秸秆和籽粒总吸氮量分别为65.5、89.1、122.5kg/hm2，总吸磷量分别为14.5、15.3、20.1kg/hm2，总吸钾量分别为81.6、98.2、130.0kg/hm2。甜玉米鲜苞产量和氮磷钾总吸收量均随着种植密度的增加而明显增加。
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| 关 键 词： | 冷浸田 冷浸田 Fe2+ 水稻 POD SOD MDA |
| 收稿时间： | 2015/1/21 0:00:00 |
| 修稿时间： | 2/2/2015 12:00:00 AM |
Study on the NPK Uptake of Sweet Corn Under Different Planting Densities |
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| Abstract: | (Objective)(Method) The field experiment was conducted to study the effect of planting density on the sweet corn yield and NPK uptake in order to supply theoretic basis for nutrient optimized management with the aim of high yield, excellent grain quality, high efficiency of nutrient resource and friendly environment. (Results) The main results were as follows: The fresh ear yield of sweet corn were 9179,10285 and 11664 kg/hm2 respectively under low density (3419 plant/mu), medium density (4103 plant/mu) and high density (5128 plant/mu). At the same amount of NPK fertilizer, the total nitrogen uptake of sweet corn stover and grain at harvest stage were 65.5,89.1 and 122.5 kg/hm2(N), total phosphorus were 14.5,15.3 20.1 kg/hm2(P) and total potassium were 81.6,98.2 and 130.0 kg/hm2(K) , respectively, under low density (3419 plant/mu), medium density (4103 plant/mu) and high density (5128 plant/mu). (Conclusion) The sweet corn fresh ear yield and total NPK uptake increased significantly with the planting density increasing. |
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| Keywords: | sweet corn planting density yield NPK uptake |
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