rudbeckia

1. Experimental study on the influence of greenhouse environment on the growth of Rudbeckia hirta
   温室环境对黑心菊生长影响的实验研究
2. The influence of greenhouse environment on the growth of in Rudbeckia hirta, a biennial herbaceous flower was studied through comparative experiments conducted in a greenhouse and in the open air.
   以二年生草本花卉黑心菊为材料，通过温室栽培和露天栽培之间的比较实验，研究了温室环境对其生长的影响。
3. That the patience of the seed radicle of the strongest lead is patula and zinnia flowers, the weakest is Rudbeckia hirta.
   说明种子幼根对Pb的耐性最强的花卉是孔雀草和百日草，最弱的是黑心菊。
4. Seed germination test results show that the tested plants flowers on lead tolerance Iris seed is the strongest, followed by zinnia seeds and seeds of Mirabilis, patience is the worst seeds Rudbeckia hirta.
   种子萌发试验分析结果显示，供试花卉植物中对Pb胁迫的耐性最强的是马蔺种子，其次是百日草种子和紫茉莉种子，耐性最差的是黑心菊种子。

noun

1. North American perennial herbs with showy cone-shaped flower heads

   Synonym:    genus Rudbeckia