易混淆的单词： SPAD

Fig. 1 effects of different fertilizer treatments on spad value .

不同肥料处理对豫麦34旗叶spad值的影响。

The relationship between spad and maize yield at small bell stage .

夏玉米小喇叭口期spad值与产量关系。

The relationship between spad and maize yield at large bell stage .

夏玉米大喇叭口期spad值与产量关系。

The relationship between spad and the wheat yield at jointing stage .

拔节期冬小麦叶片spad值与产量关系。

Primary study on application of spad value to estimate chlorophyll and nitrogen content in wheat leaves .

应用spad值预测小麦叶片叶绿素和氮含量的初步研究。