| 喷洒氯化钾对油菜植株硝酸盐再利用的影响 |
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| 引用本文： | 董春华,刘强,文石林,荣湘民,宋海星,张玉平,高菊生.喷洒氯化钾对油菜植株硝酸盐再利用的影响[J].土壤通报,2011(2). |
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| 作者姓名： | 董春华 刘强 文石林 荣湘民 宋海星 张玉平 高菊生 |
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| 作者单位： | 中国农业科学院农业资源与农业区划研究所祁阳农田生态系统国家野外试验站;湖南农业大学资源环境学院; |
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| 基金项目： | 国家自然科学基金(30671206); 湖南省自然科学基金(07JJ3074)资助 |
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| 摘 要： | 从植物体本身着手研究植物氮素高效利用的机理与途径,这是近几年来植物氮素营养研究的热点之一,而调动植物液泡中的硝酸盐使之得到更高程度的再利用,这是提高植物氮素利用效率和降低植物体内硝酸盐含量的途径之一。试验采用土培试验,研究叶面喷施质量分数为1%的氯化钾溶液对油菜角果初期和收获期植株硝酸盐累积再利用的影响,以喷施质量分数为1.17%的硫酸钾溶液(要求氯化钾和硫酸钾溶液中钾离子的物质的量浓度相同)和清水作为对照,在开花后期开始喷施,连续隔日喷洒15天,喷施部位在茎和叶,重点喷洒叶的背面,尽量不喷施至叶柄,于角果初期和收获期采样。结果表明,喷施氯化钾溶液能显著降低油菜角果初期和收获期茎、叶、根硝酸盐含量和植株硝酸盐总量,促进硝酸盐再利用;可以增强角果初期叶片硝酸还原酶的活性;能增加收获期干物质累积量,但不影响角果初期干物质累积量。
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| 关 键 词： | 油菜 喷施氯化钾 硝酸盐 |
The Effect of Spraying KCL Solution on Nitrate Utilization of Oilseed Rape(Brassica napus L.) |
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| DONG Chun-hua ,LIU Qiang ,WEN Shi-lin ,RONG Xiang-min ,SONG Hai-xing ,ZHANG Yu-ping ,GAO Ju-sheng.The Effect of Spraying KCL Solution on Nitrate Utilization of Oilseed Rape(Brassica napus L.)[J].Chinese Journal of Soil Science,2011(2). |
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| Authors: | DONG Chun-hua LIU Qiang WEN Shi-lin RONG Xiang-min SONG Hai-xing ZHANG Yu-ping GAO Ju-sheng |
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| Institution: | DONG Chun-hua 1,LIU Qiang 2,WEN Shi-lin 1,RONG Xiang-min 2,SONG Hai-xing 2,ZHANG Yu-ping 2,GAO Ju-sheng 1(1.Institute of Agricultural Resources and Regional Planning CAAS,Qiyang Agro-ecosystem of National Field Experimental Station,Qiyang Hunan 426182,China,2.College of Resource and Environment,Hunan Agricultural University,Changsha 410128,China) |
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| Abstract: | Mechanisms and means about high efficiency utilization of nitrogen were researched from plant which has already been a hot topic of the study of plant nitrogen.The effects of spraying 1% KCl solution on accumulation and reutilization of nitrate in oilseed rape in initial siliquing stage and harvesting stage,which were studied by using soil cultural experiment.Controlled by Spraying 1.17% K2SO4 solution(Potassium chloride and potassium sulfate solution requirements in the same concentration of potassium) and... |
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| Keywords: | Oilseed Rape(Brassica napus L ) Spraying KCl solution Nitrate |
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