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目的:研究种苗质量对怀地黄生长发育以及收获期经济产量和质量的影响,为怀地黄规范化种植提供依据。方法:通过怀地黄主产区种苗质量调查,了解当前地黄种苗质量现状;进行不同等级种苗的田间小区栽培试验,检测怀地黄栽培不同阶段干物质积累及低聚糖含量,并统计收获期经济产量。结果:怀地黄主产区农民选种随意性很强,对种苗质量关注不够。优质怀地黄种苗能明显提高田间出苗率,促进地黄前期快速生长,最终增加收获期经济产量。在收获期,85-5品种一级和二级种苗经济产量分别比三级苗高63%,50%,而北京1号一级和二级种苗经济产量分别比三级苗高50%,47%。结论:选种时以直径>1.5 cm的一二级种苗为最佳。
OBJECTIVE: To study the effects of seed quality on the growth and development of Rehmannia glutinosa and the economic yield and quality at harvest, and provide the basis for the standardized cultivation of Rehmannia glutinosa. Methods: The current quality of Rehmannia glutinosa seedlings was investigated through the investigation of the quality of the seedlings in the main producing areas of Huai Dihuang. The cultivation experiments of field plots with different grades of seedlings were conducted. The dry matter accumulation and the content of oligosaccharides in different stages of the cultivation of Rehmannia glutinosa were observed. Economic output. Results: The random selection of farmers in the main producing areas of Huidihuang is very arbitrary, and the quality of seedlings is not enough. High-quality land yellow rehmannia seedlings can significantly increase the rate of emergence in the field, and promote rapid growth of Rehmannia early, and ultimately increase economic output during harvest. At the harvesting stage, the economic yields of the first and second grade seedlings of 85-5 varieties were respectively 63% and 50% higher than those of the third grade seedlings, while the economic output of the first and second grade seedlings of Beijing No.1 was 50% , 47%. Conclusion: The first and second seedlings with diameter> 1.5 cm were the best choice.