| 不同耕作措施对旱地春小麦旗叶光合特性的影响 |
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| 引用本文： | 练宏斌,黄高宝,谢军红,赵天武,钱美宇.不同耕作措施对旱地春小麦旗叶光合特性的影响[J].甘肃农业大学学报,2009,44(1). |
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| 作者姓名： | 练宏斌 黄高宝 谢军红 赵天武 钱美宇 |
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| 作者单位： | 甘肃农业大学农学院,甘肃,兰州,730070 |
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| 基金项目： | 科技部科技支撑计划项目 |
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| 摘 要： | 研究了不同耕作措施下春小麦旗叶光合生理特性的变化.结果表明:不同耕作措施下旗叶光合速率(Pn)从孕穗到完熟期均呈逐步下降的趋势,但免耕结合秸秆覆盖(NTS)、传统耕作结合地膜覆盖(TP)和免耕(NT)处理的Pn在乳熟期有小幅度的回升.与处理T(传统耕作)相比,NTP(免耕结合地膜覆盖)、TP、NTS、NT以及TS(传统耕作结合秸秆覆盖)的平均Pn分别提高了15.17%1、1.26%8、.97%4、.08%和9.46%,平均蒸腾速率(Tr)分别提高了14.40%、16.00%、8.00%3、.20%和12.80%,但是保护性耕作措施(除NT外)下旗叶的平均水分利用效率(WUE)均小于传统耕作T.不同耕作措施对Pn、Tr和WUE影响最为显著的生育时期分别是乳熟期、孕穗期和乳熟期;生育时期对Pn、Tr和WUE的影响大于耕作措施对其的影响.
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| 关 键 词： | 半干旱区 保护性耕作 春小麦 光合特性 |
Effects of different tillage methods on flag leaf photosynthetic characteristics of spring wheat in semi-arid area |
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| LIAN Hong-bin,HUANG Gao-bao,XIE Jun-hong,ZHAO Tian-wu,QIAN Mei-yu.Effects of different tillage methods on flag leaf photosynthetic characteristics of spring wheat in semi-arid area[J].Journal of Gansu Agricultural University,2009,44(1). |
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| Authors: | LIAN Hong-bin HUANG Gao-bao XIE Jun-hong ZHAO Tian-wu QIAN Mei-yu |
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| Institution: | LIAN Hong-bin,HUANG Gao-bao,XIE Jun-hong,ZHAO Tian-wu,QIAN Mei-yu(College of Agronomy,Gansu Agricultural University,Lanzhou 730070,China) |
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| Abstract: | Some flat leaf photosynthetic characteristics of spring wheat under different tillage methods were measured in semi-arid area of the Loess Plateau.The results showed that the photosynthesis rate(Pn)under the different tillage methods was gradually decreased from booting stage to mature-ripe stage,but the Pn under no tillage with stubble retention(NTS),conventional tillage with plastic mulching(TP) and no-till with no stubble(NT)could slightly be improved in milk-ripe stage;compared with conventional tillage... |
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| Keywords: | semi-arid area conservation tillage spring wheat photosynthetic characteristics |
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