| 填闲作物对植烟土壤残留氮素吸收利用的影响 |
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| 引用本文： | 段淑辉,李帆,钟越峰,朱开玲,裴晓东.填闲作物对植烟土壤残留氮素吸收利用的影响[J].广西农业科学,2013(8):1308-1312. |
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| 作者姓名： | 段淑辉 李帆 钟越峰 朱开玲 裴晓东 |
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| 作者单位： | 湖南省浏阳市烟草专卖局,湖南浏阳410300 |
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| 基金项目： | 湖南省烟草公司长沙市公司资助项目（12-14Aa08） |
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| 摘 要： | 【目的】研究填闲作物对植烟土壤残留氮素吸收利用的影响，为浏阳市植烟土壤科学轮作制度提供科学依据。【方法】通过防雨棚内大棚桶栽试验，模拟旱地和水田环境，研究植烟红壤及紫色土上种植水稻、萝卜、小白菜、红薯、大白菜、玉米等6种填闲作物时不同深度土壤氮转化迁移的动态变化，及不同填闲作物对土体残留氮素吸收利用的影响；收获后取植株样测定植株全氮含量，并测定作物产量、经济效益等指标。【结果】旱地红壤上填闲作物干重、全氮含量和总吸氮量均显著高于紫色土。不同土壤类型，作物吸氮规律存在差异，红壤上小白菜吸氮量最高，为68．52kg／ha，大白菜总吸氮量最低，为43．93kg／ha；紫色土上萝卜总吸氮量最高，为48．78kg／ha，大白菜总吸氮量最低，为24．22kg／ha。6种填闲作物经济效益从高到低依次为：萝卜〉大白菜〉红薯〉小白菜〉玉米〉水稻。【结论】适宜与烤烟轮作作物为萝卜，其全氮吸收量和经济效益均高于其他作物。
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| 关 键 词： | 植烟土壤 填闲作物 土壤残留氮 经济效益 浏阳市 |
Effects of catch crops on residual nitrogen utilization of tobacco-planted soil |
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| DUAN Shu-hui,LI Fan,ZHONG Yue-feng,ZHU Kai-ling,PEI Xiao-dong.Effects of catch crops on residual nitrogen utilization of tobacco-planted soil[J].Guangxi Agricultural Sciences,2013(8):1308-1312. |
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| Authors: | DUAN Shu-hui LI Fan ZHONG Yue-feng ZHU Kai-ling PEI Xiao-dong |
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| Institution: | (Liuyang Tobacco Monopoly Bureau, Liuyang, Hunan 410300, China) |
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| Abstract: | Objective]The the present study was aimed to investigate the influence of catch crops on residual nitrogen utilization of tobacco-planted soil and provide references for scientific rotation system of tobacco fields. Method ]Simulating the environment of dry land and paddy field, the pot trial was conducted in weather enclosure by planting rice, turnip, sweet potato, pakchoi, maize and Chinese cabbage in red earth and purple soil to study the effects of transformation dynamics and different catch crops on the utilization of the residual soil nitrogen. After harvest, plant samples were collected to determine total nitrogen content, crop yield and economic benefits. Result ]Dry weight, total nitrogen content and total nitrogen uptake amount in the dry land red earth were significantly higher than those in the purple soil. Nitrogen absorption varied in different soil types and catch crops. The nitrogen absorption content was the highest in pakchoi in the red earth （68.52 kg/ha）, while it was the lowest in Chinese cabbage （43.93 kg/ha） In the purple soil, turnip had the highest content of nitrogen absorption （48.78 kg/ha）, while Chinese cabbage had the lowest （24.22 kg/ha） The economic profit descending order of six catch crops was turnip 〉 Chinese cabbage 〉 sweet potato〉 pakehoi 〉corn〉rice. Conclusion]Comprehensively considering nitrogen amount and economic efficiency indicators, turnip was selected to be the suitable rotation crop for tobacco fields. |
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| Keywords: | tobacco field catch crop residual nitrogen utilization Liuyang City |
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