花卉的分类方法有很多种，本文只简要介绍一下草本花卉的生物特征分类及在绿化工程中应用的相关知识。 There are many ways to classify flowers, and this paper only briefly introduces the biological characteristics of herbaceous flowers and the relevant knowledge applied in greening engineering. 草本花卉的定义是指：花卉的茎木质部不发达，支持力弱的花卉（也称草质茎）。 The definition of a herb flower is that the stems of flowers are not well developed, and they support weak flowers (also known as grass-stalk). 其种类包括一、二年生草花、宿根花卉（家庄电动伸缩门 保定桌椅  保定水处理设备 河北机械加工  保定养老院  保定防水多年生花卉）、球根类花卉、多年生常绿草本植物及水生花卉、蕨类植物等（本文略）。 The type, including a, biennial and perennial root flowers (perennial flowers), bulbous flowers, evergreen perennial herbs and aquatic flowers and plants, ferns, etc (slightly) in this paper. 草本花卉在绿化中的应用 Herb flowers are applied in greening （一）一、二年生草花 (1) one, two years old grass flower 1.多为温室育苗后栽植 Many plants are planted after planting 移栽时，植株密度北方地区一般为20株至25株/平方米，少数品种36株至45株/平方米（如蓝花鼠尾草等），特殊品种按设计密度施工，但必须防止栽植过密引起植株徒长、倒伏和病虫害滋生。 When transplanting, plant density in the north are generally 20 to 25 strains plants/square meters, a few varieties of 36 strains to 45 plants/m2 (such as blue flower sage, etc.), special varieties according to the density of design construction, but must prevent plant too close cause moderate growth, lodging, and plant diseases and insect pests. 2.在工程项目中直播（播种） Live (sowing) on projects 播种前必须对厚30厘米的土壤进行整地、施肥，土壤不适的，需进行土质改良。 Before sowing, the soil must be ground, fertilized, and the soil is not suitable for soil improvement. 播种时，要根据不同品种的播种量计算进行播种，播种量过多，易增加除草成本，过密，则影响花卉正常生长势和观赏效果。现在草花播种量多在3克至5克/平方米之间，多数品种种子价格多在100元至400元/公斤，平均播种成本为1元至2.5元/平方米。 Sowing, according to the different varieties of rate calculation, sowing rates too much, easy to increase the cost of weeding, too close, affect the normal growth potential flowers and ornamental effect. Now brews rate more between 3 g to 5 g/m2, most varieties seeds price is in 100 yuan to 100 yuan/kg, more average planting cost 1 yuan to 2.5 yuan/square meters