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| 红壤性水稻土上钾肥运筹对烤烟产量和品质的影响 | |
| 引用本文： | 钟晓兰,张德远,何宽信,李立新,程小强.红壤性水稻土上钾肥运筹对烤烟产量和品质的影响[J].土壤,2006,38(3):315-321. |
| 作者姓名： | 钟晓兰 张德远 何宽信 李立新 程小强 |
| 作者单位： | 1. 南京大学城市与资源学系,南京,210093 2. 江西农业大学国土学院,南昌,330045;江西省烟叶科学研究所,南昌,330045 3. 江西省烟叶科学研究所,南昌,330045 4. 江西省峡江县烟草专卖局,江西,峡江,331400 |
| 基金项目： | 全国烟草平衡施肥技术试验与推广项目;江西省烟叶科学研究所基金 |
| 摘 要： | 利用田间小区试验研究了南方红壤性水稻土上K肥用量及基追肥比例对烤烟的施用效果。试验结果表明:相同追肥比例下,烟叶产量、产值为施K(K2O)量270 kg／hm2最高,315 kg／hm2最低;总N和烟碱含量随K肥用量增加而极显著减少(r=-0．99***,r=-0．97***,P<0．001)。相同K肥用量下,烟叶产量基追肥比3:7 最高,5:5最低:上等烟比例、均价、产值、烟叶含K量随追肥比例增加而显著提高。因此,在速效K含量为130 mg／kg的红壤性水稻土上,选择适当的K肥用量,增加追肥比例,能更好发挥K肥的施用效果,提高烟叶含K 量,改善烟叶品质。本试验以施K量270 kg／hm2,基追肥比例3:7为最优组合。 |
| 关 键 词： | 红壤性水稻土 烤烟 钾肥运筹 钾肥用量 基追肥比例 |
Effects of Potassium Application on the Yield and Quality of Flue-Cured Tobacco in the Red Paddy Soil |
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| ZHONG Xiao-lan,ZHANG De-yuan,HE Kuan-xin,LI Li-xin and CHENG Xiao-qiang.Effects of Potassium Application on the Yield and Quality of Flue-Cured Tobacco in the Red Paddy Soil[J].Soils,2006,38(3):315-321. | |
| Authors: | ZHONG Xiao-lan ZHANG De-yuan HE Kuan-xin LI Li-xin and CHENG Xiao-qiang |
| Institution: | 1 Department of Urban and Resources Sciences, Nanjing University, Nanjing 210093, China; 2 College of Land, Resources, and Environment of Jiangxi Agricultural University, Nanchang 330045, China; 3 Institute of Tobacco Leaf Science of Jiangxi Province, Nanchang 330045, China; 4 Tobacco Monopolization Agency of Xiajiang City, Xiajiang, Jiangxi 331400, China |
| Abstract: | A field trial was conducted in red paddy soil to study effects of K application rate and ratio of basal and sidedressings (BS ratio) of the K fertilizer on growth, yield and quality of flue-cured tobacco. Results showed that when the BS ratios were the same K, the yield and production value were the highest with the treatment applied with 270 kg/hm2 K(K2O) in total, and the lowest with the treatment applied with 315 kg/hm2; with the rising of K application rate, the contents of total N and nicotine markedly decreased ( r = -0.99***, r = -0.97***, P<0.001). When the K application rates were kept the same, the highest yield of tobacco leaves was obtained in the treatment being 3:7 in BS ratio and the lowest in the treatment being 5:5 in BS ratio. In terms of yield of tobacco leaves, the treatments of BS ratio were in the order of 70% > 30% > 50%, while in terms of proportion of top grade leaves, average price, production value and K content of tobacco leaves were in the order of 70%>50%>30%. Therefore, in soils, 130 mg/ kg1 in available K content, keeping a feasible K application rate and increasing the proportion of sidedressing may improve use efficiency of the K fertilizer applied, K content and quality of tobacco leaves as well. In this experiment, the best combination is 270 kg/hm2 in K application rate and 3:7 in BS ratio. |
| Keywords: | Red paddy soil Flue-cured tobacco K application K application rate Basal/sidedressing ratio |
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