作者于1977-1981年在0.125公顷种子小区上进行了问隔50米的交互授粉试验。小区宽25米,长50米。行距1米。3个禾草为无芒雀麦、扁穗冰草和草芦。每个草种选两个基因型不同的品种,同一草种的两个品种在田间小区排列上相距5O米。观察平均结果是,小区外边4行受交互授粉的影响比内部大。边缘两行的混杂更为严重,如雀麦为6.7％和9.4％,扁穗冰草为5.5％,草芦为9.4％,平均混杂值,无芒雀麦同一方向为2.4％,相反方向为4.6％; The author conducted a cross-pollination test of 50 meters at 0.125 hectare seed plot in 1977-1981. Community 25 meters wide, 50 meters long. Row spacing of 1 meter. 3 grasses are Brome grass, Siberian hay and grass. Two different genotypes were selected for each grass species. Two varieties of the same grass species were arranged on the field plot at a distance of 50 meters. The average observed result is that 4 rows outside the plot are more affected by the interaction of pollination than inside. Margins were mixed more seriously, such as 6.7% and 9.4% for broccoli, 5.5% for Agrimony and 9.4% for Agropyron, with 2.4% in the same direction in the same direction and 2.4% in the opposite direction 4.6%;