Studies on the Grassland Development in the Frest VII. Effect of shading degrees on the crop growth rate, net assimilation rate and photosynthtic active of main grasses
This experiment was carried out to investigate the effect of shading degrees (0:full sunlight, 25, 50 and 75%) on the crop growth rate (CGR), net assimilation rate (NAR) and photosynthetic activity of grasses for obtaining the basic data on the developmen