When photosyntheticintensity was 60%, net photosyntheticintensity of chinese fir population was the biggest.
光照强度60％时，杉木林净光合强度最大，大于或小于60％都不利于光合强度的提高。
2
Determining different leaves kinds chlorophyl content and photosyntheticintensity in different stage by using distant crossing posterity as material.
用远缘杂交后代为材料，测定了不同叶型不同时期的叶绿素含量、光合强度。
3
It is easy to operate and master and more accurate to determine the data when the improved half leaf method is improved and used to determine photosyntheticintensity.