广金钱草田间育苗影响因素研究

Research of Field Seedling Technique on Seed Germination and Growth of Desmodium styracifolium(Osb.) Merr.

【目的】观察广金钱草在田间育苗过程中,播种季节和播种密度对其种子发芽率和生长状况的影响。【方法】对种子的品质进行检验后,在3-10月间进行播种试验,比较不同播种时间和密度对种子发芽率及生长状况的影响。【结果】以广东平远为种植基地,3-10月间种子的发芽率均比较稳定,苗长势良好;随着播种密度的增加,种子发芽率减少,在0.5-1 g/m^2范围内,发芽率达80%。【结论】广金钱草可在春、夏、秋3季播种,以秋季最佳,其适宜的播种密度为0.5-1g/m^2。

Objective To observe the influence of sowing time and planting density on seed germination percentage and growth of Desmodium styracifolium（Osb.） Merr..Methods After quality inspection of the seed,the seeds planting test for Desmodium styracifolium（Osb.） Merr.was carried out from March to October,and the influences of sowing time and planting density on the seed germination percentage and growth were observed.Results On the planting base of Pingyuan county in Guangdong province,the seeds of Desmodium styracifolium（Osb.） Merr.planted from March to October had a high germination percentage and the seedling grew well.With the increase of planting density,the seed germination percentage decreased,but was up to 80% when the planting density was 0.5～1.0 g /m2.Conclusion The optimum planting time for Desmodium styracifolium（Osb.） Merr.is in autumn and the optimum planting density is 0.5～1.0 g /m2.