湖北农业科学2025，Vol.64Issue(1)：39-43,5.DOI:10.14088/j.cnki.issn0439-8114.2025.01.007
棉花磷肥施用量与磷素养分平衡的数学模型构建
Construction of mathematical models for phosphorus fertilizer application amount and phosphorus nutrient balance in cotton
摘要
Abstract
In order to optimize the application amount of phosphorus fertilizer in cotton and ensure the balance of phosphorus,the Lo-gistic model was selected to analyze the phosphorus accumulation in different growth stages of cotton,and then the exponential model and linear model were used to analyze the relationship between phosphorus application amount and soil available phosphorus content.Based on the fertilizer effect function method,a linear plus platform mathematical model was constructed to simulate the relationship between phosphorus fertilizer application amount and cotton yield.On this basis,the optimum fertilization amount was determined by the nutrient balance method.The results showed that as the application of phosphorus fertilizer gradually increased,the yield of cotton also increased accordingly.When the application amount of phosphorus fertilizer was 83.99 kg/hm2,the yield of seed cotton reached the highest level,which was 6 410.784 kg/hm2.By optimizing the fertilization strategy,the phosphorus input of cotton was determined to be 21.98 mg/kg,and the corresponding phosphorus fertilizer application amount(P2O5)was 82.64 kg/hm2,which could not only en-sure the cotton yield,but also ensure the balance between the acquisition and expenditure of phosphorus.关键词
棉花/磷肥/施用量/磷素养分平衡/数学模型/肥料效应函数法Key words
cotton/phosphate fertilizer/application amount/phosphorus nutrient balance/mathematical model/fertilizer effect function method分类
农业科技引用本文复制引用
曹钻,胡艳,刘雪云..棉花磷肥施用量与磷素养分平衡的数学模型构建[J].湖北农业科学,2025,64(1):39-43,5.基金项目
西安培华学院校级课题(PHKT2071) （PHKT2071）
