When photosynthesis potential of population, grain filling rate and dehydration speed in mature period were improved, the increasing of yield would be significant.
群体光合性能增强，籽粒灌浆速率高，成熟期脱水速度快，增产效果显著。
2
Effects of different spacing form, density on structure of population, photosynthesis and grain yield of Lankao906 were studied under the high yielding condition.