净同化指植物的同化器官进化的同化作用与此期的呼吸作用之差而言。一般同化作用作为其直接测定的就是净同化，也称外观同化。净同化大小是依（绝对）同化作用和呼吸作用的条件而变动的。
比叶重和含氮量与净同化速率间存在正相关。
Specific leaf weight and nitrogen content had positive relation to the net assimilation rate.
净同化率高。
叶绿素含量与净同化速率间没有显著关系，但与含氮量和比叶重有关。
Chlorophyll content had no significant relation with the net assimilation rate, but was related to the nitrogen content and the specific leaf weight.
应用推荐