十二种草花种苗生长及氮、磷、钾吸收特性  

The Growth of 12 Kinds of Annual Flowers Seedling and Its Absorption Characteristics of N,P and K

作　　者：董爱香[1] 魏峥[2] 王涛[1] 张西西[1] 

机构地区：[1]北京市园林科学研究所,北京100102 [2]中国农业大学农学与生物技术学院,北京100094

出　　处：《北方园艺》2009年第11期169-172,共4页Northern Horticulture

基　　金：北京市科委重大资助项目(D0705003040121)

摘　　要：应用穴盘育苗的方法研究了12种草花种苗生长初期、中期和后期干物质积累和N、P、K养分含量的变化。结果表明:后期为种苗快速生长期,干物质累积和N、P、K养分含量约占2/3。一串红喜N,美女樱喜P,矮牵牛喜K。勋章菊、石竹和鼠尾草种苗生长量最大,N、P、K吸收量也较大,彩叶草、四季海棠和非洲凤仙种苗生长量较小,N、P、K吸收量也较少。种苗生长吸收均以K最高,其次为P、N最低,多数草花种苗N、P、K吸收比例可视为1∶1.5∶3。Dry matter accumulation and variation of N,P and K contents of 12 kinds of annual flowers seedling during the earlier stage,medium stage and later stage of growth were studied by plug seedling.The results showed that the later stage was the fastest stage of seedling growth,while in this stage the dry matter accumulation and variation of N,P and K contents account for 2/3.Salvia like N,Verbena like P,and Petunia like K.Gazania,Dianthus and Salvia farinacea had biggest dry matter accumulation,at the same time had a high absorption of N, P and K. Coleus, Begonia and Impatient had small dry matter accumulation, and their N, P and K absorption was low. Nutrient absorption of various annual flowers had the same trend： K〉P〉N. The proportion of N, P and K absorption of most annual flowers could be as 1：1.5：3.

关 键 词：草花种苗 生长 氮 磷 钾 吸收 

分 类 号：S681.062[农业科学—观赏园艺]