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| 不同控释氮肥用量对秋季大白菜产量与氮肥农学效率的影响——以桂中地区为例 | |
| 引用本文： | 韦正宝,曾维宾,黄金生,刘永贤,陀少芳,周柳强.不同控释氮肥用量对秋季大白菜产量与氮肥农学效率的影响——以桂中地区为例[J].中国园艺文摘,2011,27(3):5-6. |
| 作者姓名： | 韦正宝 曾维宾 黄金生 刘永贤 陀少芳 周柳强 |
| 作者单位： | 1. 广西来宾市兴宾区农业局,广西,来宾,546100 2. 广西农业科学院农业资源与环境研究所,广西,南宁,530007 3. 广西农业科学院,广西,南宁,530007 4. 广西土壤肥料工作站,广西,南宁,530008 |
| 基金项目： | 国家科技支撑项目，桂科基，国际植物营养研究所，广西农科院科技发展基金 |
| 摘 要： | 大白菜是喜氮作物,氮肥用量的多少直接影响其产量与效益。为探索桂中地区大白菜的平衡施肥技术,2008年开展大白菜的不同控释氮肥用量试验研究。结果表明:施氮水平为1395kg/hm2时大白菜产量较高,为142500kg/hm2;施氮水平为930kg/hm2时大白菜的农学效率较高,为7.89kg/kg。可见,氮肥施用范围为930～1395kg/hm2时,桂中地区大白菜的经济、生态效益比较理想。 |
| 关 键 词： | 大白菜 控释氮肥 产量 农学效率 桂中地区 |
Effect of Different Dosages of Controlled-release N Fertilization on Yield and Nitrogen Agronomic Efficiency of Chinese Cabbage in the Middle Area of Guangxi |
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| Authors: | WEI Zheng-bao ZENG Wei-bin HUANG Jin-sheng LIU Yong-xian TUO Shao-fang ZHOU Liu-qiang |
| Institution: | WEI Zheng-bao ZENG Wei-bin HUANG Jin-sheng LIU Yong-xian TUO Shao-fang ZHOU Liu-qiang |
| Abstract: | Chinese cabbage is a crop which absorbs nitrogen comparatively highly; the dosage of nitrogen fertilizer directly influences the yield and the benefit of Chinese cabbage. In order to probe the technique of fertilizer balancing, in 2008, the field experiment in different dosages of nitrogen effect were carried out in the middle area of Guangxi. The results show that using nitrogen fertilizer of 1 395 kg/hm^2, Chinese cabbage got the highest yield of 142 500 kg/hm^2. The treatment of 930 kg/hm^2 achieved the highest nitrogen a gronomic efficiency. So, for Chinese cabbage in the middle area of Guangxi, 930-1395 kg/hm^2 is a reasonable range for N fertilization. |
| Keywords: | Chinese cabbage controlled-release N fertilizer yield agronomic efficiency |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |