For speeding up the production of planting stock of Dashi early ripening plum, the experiments on softwood cuttage were conducted with plant growth regulators.
为了加速大石早生李的苗木生产，应用植物生长调节剂进行了嫩枝扦插育苗试验。
The growth, fruit setting, adaptability and fruit quality of Dashi early maturing plum were observed from 1991 to 1996.
1996年在保定市的易县、高阳、清苑、阜平、蠡县等地，对大石早生李的生长、结果、适应性、果实品质等进行了研究。
In early spring, plum flowers at the Fragrant Snow and Cloud Pavilion blossom against the cold, and crabapple flowers at the Spring Crabapple Flower Dock weave a brocade of colors;
早春时节，雪香云蔚亭中梅花傲雪绽放，海棠春坞的海棠花盛开如五色锦缎；
In early spring, plum flowers at the Fragrant Snow and Cloud Pavilion blossom against the cold, and crabapple flowers at the Spring Crabapple Flower Dock weave a brocade of colors;
早春时节，雪香云蔚亭中梅花傲雪绽放，海棠春坞的海棠花盛开如五色锦缎；
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