| 吉林半干旱区基于覆膜滴灌条件下春玉米钾肥适宜用量研究 |
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| 引用本文： | 孔丽丽,侯云鹏,李前,尹彩侠,秦裕波,王蒙,于雷,刘志全.吉林半干旱区基于覆膜滴灌条件下春玉米钾肥适宜用量研究[J].玉米科学,2019,27(6):124-130. |
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| 作者姓名： | 孔丽丽 侯云鹏 李前 尹彩侠 秦裕波 王蒙 于雷 刘志全 |
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| 作者单位： | 吉林省农业科学院农业资源与环境研究所/农业农村部东北植物营养与农业环境重点实验室, 长春 130033,吉林省农业科学院农业资源与环境研究所/农业农村部东北植物营养与农业环境重点实验室, 长春 130033,吉林省农业科学院农业资源与环境研究所/农业农村部东北植物营养与农业环境重点实验室, 长春 130033,吉林省农业科学院农业资源与环境研究所/农业农村部东北植物营养与农业环境重点实验室, 长春 130033,吉林省农业科学院农业资源与环境研究所/农业农村部东北植物营养与农业环境重点实验室, 长春 130033,吉林省农业科学院农业资源与环境研究所/农业农村部东北植物营养与农业环境重点实验室, 长春 130033,吉林省农业科学院农业资源与环境研究所/农业农村部东北植物营养与农业环境重点实验室, 长春 130033,吉林省农业科学院农业资源与环境研究所/农业农村部东北植物营养与农业环境重点实验室, 长春 130033 |
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| 基金项目： | 吉林省农业科技创新工程自由创新项目（CXGC2017ZD001）、农业部植物营养与肥料学科群开放基金项目（KLPNF-2018-1）、国家重点研发计划（2017YFD0300604）、国际植物营养研究所（IPNI）项目（NMBF-Jilin-2018）、吉林省科技基础条件与平台建设计划（20160623030TC） |
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| 摘 要： | 通过2014～2015年连续两年田间试验,研究覆膜滴灌条件下不同钾肥用量对玉米产量、钾素吸收利用的影响。结果表明,施钾可显著提高玉米产量,施钾增加玉米穗粒数和百粒重,玉米产量随施钾量的增加先增后降,通过玉米产量(y)和施钾量(x)二次曲线拟合,得出最佳施钾量为92.8～105.0 kg/hm~2。与不施钾肥处理相比,施钾显著提高玉米拔节期至成熟期钾积累量,其中灌浆期和成熟期钾积累量以钾肥用量90 kg/hm~2处理最高;施钾提高吐丝期至成熟期钾素分配比例,提高幅度分别为2.7%～28.4%。与不施钾肥处理相比,施钾显著提高玉米钾素转运量、转运率及子粒吸钾量,并随施钾量的增加先增后降,均以钾肥用量90 kg/hm~2处理最高。
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| 关 键 词： | 玉米 覆膜滴灌 施钾量 钾积累量 钾素利用效率 |
| 收稿时间： | 2018/10/29 0:00:00 |
Research on Suitable Potassium Fertilizer Rate of Spring Maize under Mulched Drip Irrigation in Semi-Arid Region of Jilin Province |
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| KONG Li-li,HOU Yun-peng,LI Qian,YIN Cai-xi,QIN Yu-bo,WANG Meng,YU Lei and LIU Zhi-quan.Research on Suitable Potassium Fertilizer Rate of Spring Maize under Mulched Drip Irrigation in Semi-Arid Region of Jilin Province[J].Journal of Maize Sciences,2019,27(6):124-130. |
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| Authors: | KONG Li-li HOU Yun-peng LI Qian YIN Cai-xi QIN Yu-bo WANG Meng YU Lei and LIU Zhi-quan |
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| Institution: | Institute of Agricultural Resources and Environment, Jilin Academy of Agricultural Sciences/Key Laboratory of Plant Nutrition and Agro-Environment in Northeast Region, Ministry of Agriculture and Rural Affairs, P. R. China, Changchun 130033, China,Institute of Agricultural Resources and Environment, Jilin Academy of Agricultural Sciences/Key Laboratory of Plant Nutrition and Agro-Environment in Northeast Region, Ministry of Agriculture and Rural Affairs, P. R. China, Changchun 130033, China,Institute of Agricultural Resources and Environment, Jilin Academy of Agricultural Sciences/Key Laboratory of Plant Nutrition and Agro-Environment in Northeast Region, Ministry of Agriculture and Rural Affairs, P. R. China, Changchun 130033, China,Institute of Agricultural Resources and Environment, Jilin Academy of Agricultural Sciences/Key Laboratory of Plant Nutrition and Agro-Environment in Northeast Region, Ministry of Agriculture and Rural Affairs, P. R. China, Changchun 130033, China,Institute of Agricultural Resources and Environment, Jilin Academy of Agricultural Sciences/Key Laboratory of Plant Nutrition and Agro-Environment in Northeast Region, Ministry of Agriculture and Rural Affairs, P. R. China, Changchun 130033, China,Institute of Agricultural Resources and Environment, Jilin Academy of Agricultural Sciences/Key Laboratory of Plant Nutrition and Agro-Environment in Northeast Region, Ministry of Agriculture and Rural Affairs, P. R. China, Changchun 130033, China,Institute of Agricultural Resources and Environment, Jilin Academy of Agricultural Sciences/Key Laboratory of Plant Nutrition and Agro-Environment in Northeast Region, Ministry of Agriculture and Rural Affairs, P. R. China, Changchun 130033, China and Institute of Agricultural Resources and Environment, Jilin Academy of Agricultural Sciences/Key Laboratory of Plant Nutrition and Agro-Environment in Northeast Region, Ministry of Agriculture and Rural Affairs, P. R. China, Changchun 130033, China |
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| Abstract: | Two-year(2014-2015) field experiment was conducted to study the effects of different potassium application amountson maize yield, potassium absorption and utilization under mulched drip irrigation. The results indicated that, potassium application increased maize yield significantly through increased the grains of per spike and 100-kernel weight. Maize yield increased firstly and then decreased with the increment of potassium application. The optimum amount of potassium fertilizer application was at the range of 92.8-105.0 kg/ha, respectively, according to maize yield(y) and potassium fertilizer application(x) fitting. Compared with no potassium application treatment, potassium accumulation amount was increased significantly from jointing stage to maturing stage by applying potassium fertilizer, and it arrived at the highest value under 90 kg/ha of potassium fertilizer application from filling stage to maturing stage. Meantime, the potassium distribution proportion was increased by 2.7%-28.4% from silking stage to maturing stage by applying potassium fertilizer. Compared with different potassium application treatments, potassium translocation amount, translocation rate and potassium uptake amount of grains were increased significantly by applying potassium fertilizer, and increased firstly and then decreased with the increment of potassium application. The highest values of them were all under 90 kg/ha of potassium fertilizer application. |
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| Keywords: | Maize Mulched drip irrigation Potassium application amount Potassium accumulation Potassium utilization efficiency |
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