氮、钾肥后移施用对超高产水稻产量及其构成因素和养分含量的影响
为给贵州超高产水稻栽培的合理施肥提供理论依据,以贵州水稻中优608为材料,采用大田试验方法研究氮肥和钾肥后移施用对超高产水稻产量及其构成因素和养分含量的影响。结果表明：1水稻不同超高产施肥处理较农民习惯施肥处理（CK）显著增产,增幅为10.87%~23.82%,其中以T2增产效果最佳,增幅达23.82%。2水稻植株氮磷钾含量变化的总趋势一致,即在整个生育期内呈下降趋势,氮钾肥后移有利于提高水稻植株后期的氮磷钾含量,符合超高产水稻的需肥特性。3氮钾肥后移能较好地促进水稻各个产量构成因素平衡发展。结论：在本试验条件下,即施氮（纯氮）255 kg/hm2（施用比例为基肥40%＋蘖肥20%＋穗肥30%...
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| Published in | 西南农业学报 Vol. 29; no. 1; pp. 103 - 108 |
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| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
贵州大学农学院,贵州贵阳,550025%贵州省土壤肥料研究所,贵州贵阳550006
2016
贵州省农业资源与环境工程技术研究中心,贵州贵阳550006%贵州省黔东南州农业科学研究院,贵州凯里,556000 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1001-4829 |
| DOI | 10.16213/j.cnki.scjas.2016.01.021 |
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| Summary: | 为给贵州超高产水稻栽培的合理施肥提供理论依据,以贵州水稻中优608为材料,采用大田试验方法研究氮肥和钾肥后移施用对超高产水稻产量及其构成因素和养分含量的影响。结果表明：1水稻不同超高产施肥处理较农民习惯施肥处理（CK）显著增产,增幅为10.87%~23.82%,其中以T2增产效果最佳,增幅达23.82%。2水稻植株氮磷钾含量变化的总趋势一致,即在整个生育期内呈下降趋势,氮钾肥后移有利于提高水稻植株后期的氮磷钾含量,符合超高产水稻的需肥特性。3氮钾肥后移能较好地促进水稻各个产量构成因素平衡发展。结论：在本试验条件下,即施氮（纯氮）255 kg/hm2（施用比例为基肥40%＋蘖肥20%＋穗肥30%＋粒肥10%）,施磷（纯磷）135 kg/hm2（磷肥全部做基肥）,施钾（纯钾）240 kg/hm2（施用比例为基肥40%＋蘖肥45%＋穗肥15%）,超高产水稻的产量最佳。 |
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| Bibliography: | The effects of postponing nitrogen and potassium application on yield,yield components and nutrient content of Zhongyou 608,a super high-yielding rice variety,were studied by the field experiment to provide the theoretical basis for rational application of super highyielding rice in Guizhou. Results：（ i） The yield of super high-yielding rice under different application treatment is significantly higher than under the conventional application treatment（ CK） and its growing rate is 10. 87 %- 23. 82 %. The rice yield of T2 treatment is 23. 82 %higher than CK;（ ii） The general variation trend of N,P and K content in rice plants is no difference. That is,N,P and K content in rice plants presents a declining trend. Postponing nitrogen and potassium application is beneficial to increase N,P and K content in rice plants during last growth period,which accords with the fertilizer requirement character of super high-yielding rice;（ iii） Postponing nitrogen and potassium application can better promote balanced developme |
| ISSN: | 1001-4829 |
| DOI: | 10.16213/j.cnki.scjas.2016.01.021 |