摘要
本文通过介绍广义生长模型的概念及详细的计算过程(基于黄淮海地区夏玉米的生物累积量与氮、磷和钾元素吸收的数据),我们应用广义生长模型来评估在总有效时间内夏玉米(Zea mays L)生物量的积累和生长量以及氮、磷、钾营养元素吸收之间存在如下关系:无论施肥与否,夏玉米生物量与生长量之间均呈线性关系;夏玉米生物量与磷元素和钾元素吸收都呈线性关系,与氮元素吸收呈对数关系;在夏播条件下,黄淮海地区玉米氮的潜在吸收量是2.53,高于春播玉米氮的潜在吸收量.本研究的意义在于明晰生物量与营养元素吸收之间的关系对确定最佳的施肥策略至关重要.
The expanded growth model is to describe accumulation of biomass and mineral elements(such as nitrogen, phosphorus, potassium) with calendar time. In this analysis, the expanded is test the published data on maize(Zea mays L.) growth. Data from a field study in Huang-Huai-Hai Plain in China was used to evaluate the application of the model. We assessed the following relationships among summer corn biomass accumulation, growth quantifier,the absorption of mineral elements with calendar time in the Huang-Huai-Hai Plain. The growth model predicts a simple linear relationship between summer corn biomass yield and the growth quantifier with fertilizer or not; a simple linear relationship between biomass yield and phosphorus uptake, and potassium uptake, while logarithmic relationship between biomass yield and nitrogen uptake. The potential nitrogen uptake was 2.53 in summer corn, which was higher than that of spring maize potential nitrogen uptake. The significance of this study is to clarify the relationship between the biomass yield and nutrient absorption is very important to determine the optimal fertilization strategy.
出处
《生物数学学报》
2018年第1期127-135,共9页
Journal of Biomathematics
基金
甘肃省农业科学院农业科技创新专项计划资助(2017GAAS67)
国家重点研发计划课题(2016YFD0100103-19)
甘肃省科技重大专项(1602NKDF021)
关键词
玉米
广义生长模型
生物量
矿物元素
Corn
Expended growth model
Biomass yield
Mineral elements
