以辽宁省草河口1968年营建的红松无性系种子园和普通人工林为研究对象,对红松种子园的落花落果规律及其影响因子和人工辅助授粉进行试验研究。经10年的研究结果表明:红松种子园树木年平均自然落花落果率为46.46％,6月下旬至7月上旬是落果的高峰期。人工辅助授粉是提高座果率的有效方法,可提高座果率20％左右。因雄球花密度与座果率相关显著,故在新建种子园时,株行距应以3m×3m为宜。 Taking the Korean pine clonal seed orchard and the common plantation constructed in Caohekou of Liaoning Province in 1968 as the research object, the law of the falling and falling of the fruit in the korean pine orchard and its influencing factors and artificial pollination were studied. After 10 years of research, the results showed that the annual average rate of natural flower drop in trees of Pinus koraiensis seed orchard was 46.46%, and the peak of fruit drop was from late June to early July. Artificial pollination is an effective way to increase fruit set rate, which can increase the fruit set rate about 20%. Due to the male flower ball density and fruit rate significantly, so in the new seed orchard, the line spacing should be 3m × 3m is appropriate.