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作 者 ：邬飞波;许馥华;金珠群

期 刊 ：作物学报 1999年 25卷 04期 页码：483-488

关键词：短季棉；叶绿素计；氮素营养诊断；

Keywords:Short-season cotton (Gossypium hirsutum L.), Chlorophyll meter, Nitrogen nutrition diagnosis,

摘 要 ：研究了以叶绿素计诊断短季棉的氮素营养。结果表明，不同生育时期功能叶叶绿素计读数与叶绿素含量、全氮含量(Na，Ndw)及施氮水平呈极显著线性正相关，其中对Na的正相关高于Ndw；与光合强度呈极显著指数相关；与产量、三桃数呈极显著二次曲线回归。获得了不同生育时期叶绿素计诊断指标。叶绿素计变动1格的参考施氮量为23.3~25

Abstract:A two-site experiments for five to six nitrogen levels was carried out to study the relationship between chlorophyll meter readings (SPAD value) and physiological and yield traits in short-season cotton. The result showed that there are significant linear correlations between SPAD value and both con

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