摘要
生姜对氮、磷、钾的吸收符合Logistic方程之模型,呈“S”型曲线变化,但其吸收比例因不同生育期而异。总的来看,钾的吸收比例最高,氮次之,磷最少,全生育期氮、磷、钾的吸收比例为11.0:1:16.1。生姜各器官氮、磷、钾的含量,除在根内较稳定外,其余均随生长的进行呈下降的趋势。氮、磷、钾向各器官的最终分配量,除钾在地上茎分配略高于根茎外,氮、磷均以地下根茎的分配量最高。
The uptake of NPK by ginger plants follows the model of 'Logistic equation'. However,the uptake proportion of NPK changed with growth and development of the plant, i. g.,at the seedling stage,the uptake proportion of K was the highest, followed by N and P, but the proportion of K uptaken by the plant decreased at following stages. The ratios were N 11. 0:P1:K16.1 in its whole life cycle. At the harvest stage,the amount of NPK distributed in various organs were unevenly,with K being slightly more in aboveground parts but N and P much more in underground parts.
出处
《山东农业科学》
1992年第3期14-16,共3页
Shandong Agricultural Sciences
关键词
生姜
氮
磷
钾
吸收
ginger
NPK uptake
distribution
