热带作物学报2011，Vol.32Issue(9)：1637-1641,5.DOI:10.3969/j.issn.1000-2561.2011.09.009
大白菜氮磷钾吸收动态模型及其吸收特性研究
N, P and K Absorption Characteristics of Chinese Cabbage and Its Simulation Model
摘要
Abstract
Field experiment was conducted for quantitative studies of N, P and K absorption characteristics during the whole growth period of Chinese cabbage. The improved dynamic model of NPK uptake had the best fitting effect. According to quantitive analysis from simulation model, the nutrient uptake characteristic parameters including the maximum nutrient uptake velocity and the maximum nutrient uptake and their present time were gained. The results showed that the maximum nutrient uptake velocity and the maximum nutrient uptake of Chinese cabbage were improved by balanced fertilization. NPK uptake process in Chinese cabbage was almost synchronous, absorption characteristics depended mainly on nutrition characteristic of the varieties. NPK uptake velocity in Chinese cabbage reached their maximum value at 71 th-83 th day after the transplanting. But the maximum uptake capacity for NPK reached their maximum value at 90 th-109 th day after the transplanting.关键词
大白菜/氮磷钾/吸收特性/模型Key words
Chinese cabbage/ NPK/ Absorption characteristics/ Simulation model分类
农业科技引用本文复制引用
李娟,章明清,孔庆波,姚宝全,林秋月..大白菜氮磷钾吸收动态模型及其吸收特性研究[J].热带作物学报,2011,32(9):1637-1641,5.基金项目
国际植物营养研究所(IPNI)合作项目(No.Fujian-13) （IPNI）
国家测土配方施肥项目(No.2005-2010) （No.2005-2010）
福建省自科技厅重点项目(No.2008Y0023) （No.2008Y0023）
福建省公益类科研院所专项(No.2009R10032-4). （No.2009R10032-4）
