| 不同栽培模式下早稻-再生稻的养分积累与分配特性 |
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| 引用本文： | 林瑞余,陈鸿飞,邓家耀,梁义元,梁康迳,林文雄.不同栽培模式下早稻-再生稻的养分积累与分配特性[J].中国农学通报,2007,23(8):121-121. |
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| 作者姓名： | 林瑞余 陈鸿飞 邓家耀 梁义元 梁康迳 林文雄 |
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| 作者单位： | 1. 福建农林大学生命科学学院,福州,350002;福建农林大学农业生态研究所,福州,350002
2. 福建农林大学农业生态研究所,福州,350002 |
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| 基金项目： | 国家自然科学基金项目＂化感水稻根际土壤差异蛋白质分析＂（30671220）,福建省粮食科技重大专题＂水稻新品种（组合）高效生产和加工新技术研究＂（2004NZ01-4）,福建省科技项目＂水稻化感作用的根际生物学特性及其分子机理研究＂（2005K039）资助. |
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| 摘 要： | 【研究目的】探讨不同栽培模式早稻-再生稻水稻的养分积累动态和分配特征；【方法】以杂交水稻新组合Ⅱ优航1号为材料，采用超高产栽培 (SHC)和常规栽培(CC)模式，通过测定水稻各生育期的干物质积累和养分含量变化；【结果】超高产模式头季稻稻株N含量在全生育期均高于常规模式，孕穗前稻株P含量、黄熟前及再生稻K含量亦明显高于常规模式。超高产模式头季稻完熟期积累的N、P、K依次达15.06 g/m2、4.58 g/m2、15.8 g/m2，分别比常规模式高出47.2%、21.2%和低9.1%；分配到籽粒的N、P、K比例依次为50.5%、47.8%、25.3%，与常规栽培相近；N、P、K生产效率依次为75.39 kg/kg、247.9 kg/kg、71.9 kg/kg，P、K生产效率略高于常规栽培。超高产模式再生稻完熟期积累的N、P、K依次达10.9 g/m2、4.05 g/m2、12.9 g/m2，比常规模式高出38.0%、30.5%和78.3%；分配到籽粒的N、P、K比例依次为51.0%、68.1%、15.5%，N、K分别比常规模式低9.1%和7.0%；N、P、K生产效率依次为75.60 kg/kg、203.5 kg/kg、63.9 kg/kg；N、K生产效率低于常规栽培的。超高产模式头季稻的N、P、K需求量为：17.9 g/m2、6.77 g/m2、34.9 g/m2，比常规模式高出54.3%、35.4%、73.6%，再生稻N、P、K需求量为：9.59 g/m2、3.61 g/m2、17.20 g/m2，比常规栽培高出61.2%、43.8%、361.1%；【结论】超高产模式下水稻养分需求量大，转运比较顺畅，促进水稻高产的形成，但N、K生产效率有待进一步提高
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| 关 键 词： | 干旱胁迫 干旱胁迫 匍匐茎植物 蕨麻 克隆构件 可塑性反应 |
| 修稿时间： | 2007-05-202007-06-18 |
The properties of the accumulation and partitioning of nutrients in early season and ratoon rice(Oryza sativa L) under different cultivation models |
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| Lin Ruiyu,Chen Hongfei,Deng Jiayao,Liang Yiyuan,Liang Kangjing,Lin Wenxiong.The properties of the accumulation and partitioning of nutrients in early season and ratoon rice(Oryza sativa L) under different cultivation models[J].Chinese Agricultural Science Bulletin,2007,23(8):121-121. |
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| Authors: | Lin Ruiyu Chen Hongfei Deng Jiayao Liang Yiyuan Liang Kangjing Lin Wenxiong |
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| Institution: | (1School of Life Sciences, Fujian Agriculture & Forestry University, Fuzhou, 350002;
2Institute of Agro-ecology, Fujian Agriculture & Forestry University, Fuzhou, 350002) |
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| Abstract: | 【OBJECTIVE】The objective was to reveal characteristics of nutrients accumulation and distribution in early and ratoon rice under different cultivation models; 【METHOD】Dry weight and nutrients contents in the rice plants were determined at different developmental stages, using a new combination hybrid rice II Youhang 1 under super high-yield cultivation (SHC) and conventional cultivation(CC) models;【RESULTS】The results showed that the accumulated N, P and K in the plant were 15.06 g/m2, 4.58 g/m2 and 15.8 g/m2 at the fully ripening stage under SHC models, which were 47.2%, 21.2% higher and 9.1% lower than those under CC models respectively. The nutrients partitioned into grain were 50.5%, 47.8% and 25.3%, they were approximately equal to those as mentioned above. The production efficiencies of N, P and K were 75.39 kg/kg, 247.9 kg?kg-1 and 71.9 kg/kg respectively, showing higher use efficiency of P and K. The accumulated N, P and K in ratoon rice plants were 10.9 g/m2, 4.05 g/m2 and 12.9 g/m2respectively at fully ripening stage, which were 38.0%, 30.5% and 78.3% higher than those CC models. The partitioned ratio of nutrients into grain were 51.0%, 68.1% and 15.5%, which was 9.1% lower for N and 7.0% lower for K than that in rice under CC models. The use efficiencies of N, P and K were 75.60 kg/kg, 203.5 kg/kg and 63.9 kg/kg respectively, showing lower use efficiency of N and K for SHC models. The demands for N, P and K in the early season rice in SHC models were 17.9 g/m2, 6.77 g/m2, 34.9 g/m2, which were 54.3%, 35.4% and 73.6% higher than those in CC models respectively, and 9.59 g/m2 N, 3.61 g/m2P, 17.20 g/m2 K were needed in the ratoon rice crop, showing 61.2%,43.8% and 361.1% higher than those in CC models;【CONCLUSION】In a word, a higher nutrients demand, accompanying with more smoothly absorption and translocation of N, P and K which were beneficial to nutrients partition in the plants and enhanced production, but further effort must be made to enhance the utilization efficiency of N and K. |
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| Keywords: | Rice Ratoon rice Nutrients Accumulation Partition Dynamics |
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