| 硫包衣尿素对水稻养分吸收利用及土壤反应的影响 |
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| 引用本文： | 汪吉东,张永春,郭巧云,朱普平,胡永红.硫包衣尿素对水稻养分吸收利用及土壤反应的影响[J].华北农学报,2008,23(Z2). |
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| 作者姓名： | 汪吉东 张永春 郭巧云 朱普平 胡永红 |
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| 作者单位： | 1. 江苏省农业科学院,农业资源与环境研究所,江苏,南京,210014
2. 贵州省玉屏县农业局,贵州,玉屏,554000 |
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| 基金项目： | 国际植物营养研究所项目(IPNIJiangsu-10); 国家科技支撑计划项目(2006BAD25B07-03); 江苏省农业科学院科研基金项目(6110618) |
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| 摘 要： | 采用盆栽结合部分大田论证的试验方法,研究了硫包衣尿素(SCU)和常规尿素对水稻生长、营养元素吸收利用及增产效应和土壤反应的影响。结果表明:大田上SCU和常规尿素处理其产量分别是对照的1.20,1.11倍,盆栽试验下为对照的1.92,1.48倍;施肥量相同的SCU处理水稻产量比常规尿素处理增加10.93%~22.23%,SCU提高水稻产量的优势在于千粒重;同常规尿素相比,SCU促进了水稻对磷的吸收,对钾的影响不大。盆栽试验表明,施常规尿素和SCU的处理氮收获指数都随施氮量的增加而增加,等N量(N 0.15 g/kg土)和等施肥量(0.66 g/kg土)下,SCU处理其氮收获指数显著高于对应的常规尿素处理,施用SCU的处理其氮素的利用率也比常规尿素提高11.79%~20.25%,其氮肥利用率最高达57.58%;短期内适宜施氮量下SCU未降低土壤pH,但随着SCU施用量的增加,土壤酸化明显,且趋势超过常规尿素。
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| 关 键 词： | 水稻 常规尿素 硫包衣尿素 土壤反应 |
Effect of Sulfur-coated Urea on Nutrients Uptake and Utilization and Soil Reaction of Rice |
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| WANG Ji-dong,ZHANG Yong-chun,GUO Qiao-yun,ZHU Pu-ping,HU Yong-hong.Effect of Sulfur-coated Urea on Nutrients Uptake and Utilization and Soil Reaction of Rice[J].Acta Agriculturae Boreali-Sinica,2008,23(Z2). |
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| Authors: | WANG Ji-dong ZHANG Yong-chun GUO Qiao-yun ZHU Pu-ping HU Yong-hong |
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| Abstract: | Field together with pot experiments were carried out to study the effect of sulfur-coated urea(SCU) and urea on growth,nutrients uptake,utilization and soil reaction of rice.Results obtained were as following:In the field experiment,SCU and urea treated rice showed 20% and 11% higher yield than that of control.92%,48% of pot experiments respectively;Under same nitrogen fertilizer dose,rice fed with SCU got 10.93% to 22.23% higher yield than those of urea due to the greater thousand grain weight;Compared wit... |
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| Keywords: | Rice Urea Sulfur-coated urea Soil reaction |
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