【作者】 董爱香； 魏峥； 王涛； 张西西； 赵梁军；

【Author】 DONG Ai-xiang~1 WEI Zheng~2 WANG Tao~1 ZHANG Xi-xi~1 ZHAO Liang-jun~2 (1 Beijing Institute of Landscape and Garden,Beijing 100102;2 China Agricultural University,Beijing 100094)

【机构】 北京市园林科学研究所； 中国农业大学农学与生物技术学院；

【摘要】 应用穴盘育苗的方法研究了12种草花种苗初期、中期和后期干物质积累和NPK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NPK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,NPK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,NPK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NPK吸收比例可视为1:1.5:3。更多还原

【Abstract】 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 is 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 have biggest dry matter accumulation, at the same time have a high absorption of N,P and K.Coleus,begonia and impatient have small dry matter accumulation, and their N,P and K absorption is low.Nutrient absorption of various annual flowers has 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.更多还原