TY - Acta Agronomica Sinica A1 - QU Hui-Juan,LI Jin-Cai,SHEN Xue-Shan,LI Ru-Yi,WEI Feng-Zhen,ZHANG Yi T1 - Effects of  Plant Density on Grain Number and Grain Weight at Different Spikelets and Grain Positions in Winter Wheat Cultivars Y1 - 2009-10-12 JF - Acta Agronomica Sinica JO - Acta Agronomica Sinica SP - 1875 EP - 1883 VL - 35 IS - 10 UR - https://zwxb.chinacrops.org N1 - 10.3724/SP.J.1006.2009.01875 ER -