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三唑磷降解对水稻叶绿素含量的影响

DOI: 10.3724/SP.J.1145.2011.00211, PP. 211-214

Keywords: 三唑磷,降解,水稻,叶绿素,相关性

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Abstract:

采用田间试验方法,系统研究了内2优6号、秀水09两个水稻品种生殖生长前期经过喷施不同浓度三唑磷(2250mlhm-2、4500mlhm-2)后水稻叶绿素含量动态变化及其相关性.结果表明,喷施三唑磷对水稻叶绿素含量产生了影响,其效应随施药浓度增加而增大.三唑磷对叶绿素作用的时效在品种间存在差异,内2优6号和秀水09分别为<20d和>20d,具体表现为施药后d1,所有水稻品种的喷施处理与对照无显著性差异,施药后d3~14,与对照相比内2优6号和秀水09分别表现为显著降低和增加,施药后d21,则分别表现为不显著和显著增加.三唑磷降解率与叶绿素含量变化率之间总体存在相关性,但品种间存在显著差异,内2优6号和秀水09分别呈现负相关和正相关趋势.图1表2参21

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