据报道,山楂异花授粉比自然授粉座果率高,且异花授粉的果实个大,品质也较好。因此,栽植山楂时配置适宜的授粉树或对现有山楂树采取人工辅助授粉措施是十分必要的。但山楂的不同种、品种和类型间,花期相差较大,短者相差5～7天,长者10～15天,这就给人工授粉或杂交育种工作带来一定困难,因而,探讨山楂花粉贮藏问题,无疑具有很大的实用意义。据此,我们于1980年进行了山楂花粉低温贮藏试验,现将其结果初报如下。 It is reported that cross-pollination of hawthorn than the natural rate of high-yielding cones, and cross-pollination of a large fruit, good quality. Therefore, planting hawthorn appropriate allocation of pollination trees or artificial hawthorn artificial pollination measures is necessary. But hawthorn different species, breeds and types, the flowering phase difference between the shorter, a difference of 5 to 7 days, the elderly 10 to 15 days, which give artificial pollination or hybrid breeding work to bring some difficulties, therefore, to explore the hawthorn pollen Storage problems, no doubt has great practical significance. Accordingly, we carried out the hawthorn pollen cryogenic storage test in 1980, the results of the first report is as follows.