| 行/株距比对早晚稻产量和氮素吸收、 利用的影响 |
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| 引用本文： | 杨成春 林洪鑫. 行/株距比对早晚稻产量和氮素吸收、 利用的影响[J]. 中国农学通报, 2014, 30(24): 118-122 |
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| 作者姓名： | 杨成春 林洪鑫 |
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| 作者单位： | 江西省农业科学院土壤肥料与资源环境研究所 |
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| 基金项目： | “十二五”国家科技支撑计划;“十二五”国家科技支撑计划;江西省农科院青年创新基金 |
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| 摘 要： | 为双季水稻的合理配置行/株距比（RS/IS）提供理论依据。以早稻‘淦鑫203’、‘中嘉早17’和晚稻‘淦鑫688’、‘五丰优T025’为材料,在31.20万蔸/hm2密度下,研究了行/株距比对早晚稻产量和氮素吸收、利用的影响。早稻品种的产量以RS/IS2.8（30.0 cm×10.7 cm）和RS/IS2.0（25.0 cm×12.8 cm）处理较高,以RS/IS5.0（40.0 cm×8.0 cm）和RS/IS1.3（20.0 cm×16.0 cm）处理较低,而晚稻品种以RS/IS5.0和RS/IS2.0处理较高,以RS/IS2.8和RS/IS1.3处理较低。早稻氮素积累总量和氮肥表观利用率以RS/IS2.0处理较高,以RS/IS5.0处理较低,100 kg籽粒需氮量以RS/IS1.3处理较高,以RS/IS2.0处理较低;而晚稻氮素积累总量、100 kg籽粒需氮量和氮肥表观利用率以RS/IS2.8处理较高,以RS/IS5.0处理较低。可见,在该试验条件下,早晚稻4个品种采用25.0 cm×12.8 cm种植方式时的产量较高,采用20.0 cm×16.0 cm种植方式较低,氮素积累总量、100 kg籽粒需氮量和氮肥表观利用率以40.0cm×8.0cm较低。
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| 关 键 词： | 水稻 行 株距比 产量 氮素积累 |
| 收稿时间： | 2014-02-11 |
| 修稿时间： | 2014-04-08 |
Effects of Ratio of Row Spacing to Intrarow Spacing on Yield and Nitrogen Accumulation and Utilization of Early and Late Rice |
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| Yang Chengchun,Lin Hongxin,Yuan Zhanqi,Xiao Yunping,Liu Rengen. Effects of Ratio of Row Spacing to Intrarow Spacing on Yield and Nitrogen Accumulation and Utilization of Early and Late Rice[J]. Chinese Agricultural Science Bulletin, 2014, 30(24): 118-122 |
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| Authors: | Yang Chengchun Lin Hongxin Yuan Zhanqi Xiao Yunping Liu Rengen |
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| Affiliation: | (Soil and Fertilizer ＆ Resources and Environment Institute, Jiangxi Academy of Agricultural Sciences/Key Laboratory of Crop Ecophysiology and Farming System for the Middle and Lower Reaches of the Yangtze River, Ministry of Agriculture, P. R. China/ National Engineering and Technology Research Center for Red Soil Improvement, Nanchang 330200) |
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| Abstract: | Abstract: With early rice Zhongjiazao 17 and Ganxin 203 and late rice Ganxin 688 and WufengyouT025 as materials, the effects of RS/IS (Ratio of row spacing to intrarow row spacing) on yield, nitrogen accumulation and utilization were studied in the same planting density of 31.20×104 hills/hm2. The results showed that yield of early rice were higher in RS/IS2.8 (30.0 cm × 10.7 cm), RS/IS2.0 (25.0 cm × 12.8 cm) treatment and lower in RS/IS5.0 (40.0 cm × 8.0 cm), RS/IS1.3 (20.0 cm × 16.0 cm) treatment, while late rice were higher in RS/IS5.0, RS/IS2.0 treatment and lower in RS/IS2.8, RS/IS1.3 treatment. Total nitrogen accumulation and apparent utilization ratio of nitrogen were higher in RS/IS2.0 treatment and lower in RS/IS5.0 treatment, while,for late rice was higher in RS/IS2.8 treatment and lower in RS/IS5.0 treatment. Nitrogen requirement for 100 kg grain production was higher in RS/IS1.3 treatment and lower in RS/IS2.0 treatment, while, for late rice were higher in RS/IS2.8 treatment, lower in RS/IS5.0 treatment. Visible, early and late rice 4 varieties with higher yield in 25.0 cm × 12.8 cm, lower yield in 20.0 cm × 16.0 cm, and lower total nitrogen accumulation, nitrogen requirement for 100 kg grain production and apparent utilization ratio of nitrogen in 40.0 cm × 8.0 cm. |
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| Keywords: | Nitrogen accumulation |
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