河南农业大学学报2012，Vol.46Issue(3)：258-262,283,6.
鹤壁市旱地小麦土壤养分与产量的数学模型研究
Study on mathematical model for relationships between soil nutrients and wheat yield in dry land in Hebi
摘要
Abstract
To explore the relationships between soil nutrient and yield of winter wheat in dry land in Hebi City, guidmg peasants to rationally fertilize the soil, according to 43 representative test samples of soil total nitrogen content, available phosphorus content and organic matter content in dry land in Hebi city, a mathematical model among soil nutrients and yield was established which was up to the very significant level. The results indicate that the space variation of available phosphorus in soil nutrients in Hebi is for maximum, belonging to strong variation, with the variation coefficient for 72.77% , which shows that there is a bigger difference in application of phosphate fertilizer in different farmers, and soil full nitrogen content and soil organic matter content for medium, variation coefficient respectively for 24. 59% and 24. 79% ; On the premise of maintaining soil organic matter being in sample average level ( 14. 6 g · kg-1 ),as the increase of soil full nitrogen content, wheat yield is rendered the staged changes trend of low-high-low-high; while with the increase of soil available phosphorus content, wheat output is rendered the periodic trend of low-high-low. According to the view of effects of soil nutrient function, soil total nitrogen content corresponding to the maximum production capacity is 1. 22 g · kg-1, available phosphorus content 34. 33 mg · kg-1. And the soil total nitrogen content corresponding to the best economic production is 1. 2 g · kg , soil available phosphorus content 31. 86 mg · kg -1 . Compared with the usual fertilization model, the mathematical model among the soil nutrients and the yield has the clear advantage of targeted, and can achieve a block corresponding to a fertilization mentoring programme.关键词
小麦/旱地/土壤养分/产量/数学模型Key words
wheat/ dry lands/ soil nutrients/ yield / mathematical model分类
农业科技引用本文复制引用
徐令超,王占中,刘振东,梅兹君,郭瑞林..鹤壁市旱地小麦土壤养分与产量的数学模型研究[J].河南农业大学学报,2012,46(3):258-262,283,6.基金项目
河南省重点科技攻关项目(112102110001) （112102110001）
