小田块变量施肥系统优化设计与应用

针对苏南地区推广变量施肥存在的施肥策略过于精细化导致高密度土壤信息不易获取和普通的施肥机械难以达到播量精度等主要技术障碍,该文建立了一种简单实用的变量施肥方案,在现有机械式播种施肥机基础上进行了自动化改造,构建了一套基于简易电子处方图系统的变量施肥系统;变量施肥作业时,以单个自然田块为处理单元,依托所建立的简单实用的电子处方图系统,实现多种肥料按需配比、同一田块均匀施肥、不同田块变量施肥的功能。为提高播量精度和播量稳定性,对普通精度GPS模块的数据进行了差分和卡尔曼滤波处理,对外槽轮施肥播种器结构进行了优化设计。田间试验结果表明：电子处方图运行结果准确,施肥播种机工作稳定,种子和肥料的最大和平...

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Bibliographic Details
Published in农业工程学报 Vol. 34; no. 3; pp. 35 - 41
Main Author 余洪锋;丁永前;刘海涛;朱文倩;刘国强;傅秀清;丁为民
Format Journal Article
LanguageChinese
Published 江苏省智能化农业装备重点实验室,南京 210031%南京农业大学工学院,南京,210031 2018
南京农业大学工学院,南京 210031
Subjects
农业机械
变量施肥
自然田块
设计
试验
agricultural machinery
设计
变量施肥
variable rate fertilization
试验
自然田块
design
experiments
fields with naturally-formatted board
农业机械
Online AccessGet full text
ISSN1002-6819
DOI10.11975/j.issn.1002-6819.2018.03.005

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Summary:针对苏南地区推广变量施肥存在的施肥策略过于精细化导致高密度土壤信息不易获取和普通的施肥机械难以达到播量精度等主要技术障碍,该文建立了一种简单实用的变量施肥方案,在现有机械式播种施肥机基础上进行了自动化改造,构建了一套基于简易电子处方图系统的变量施肥系统;变量施肥作业时,以单个自然田块为处理单元,依托所建立的简单实用的电子处方图系统,实现多种肥料按需配比、同一田块均匀施肥、不同田块变量施肥的功能。为提高播量精度和播量稳定性,对普通精度GPS模块的数据进行了差分和卡尔曼滤波处理,对外槽轮施肥播种器结构进行了优化设计。田间试验结果表明：电子处方图运行结果准确,施肥播种机工作稳定,种子和肥料的最大和平均播量误差分别为3.91%和2.09%,最大和平均动态误差分别为4.52%和1.48%。该研究可为苏南小田块地区推广变量施肥提供技术参考。
Bibliography:11-2047/S
Yu Hongfeng1,2, Ding Yongqian1,2※, Liu Haitao1, Zhu Wenqian1, Liu Guoqiang1, Fu Xiuqing1, Ding Weimin1,2 （1. College of Engineering, Nanjing Agricultural University, Nanjing 210031, China; 2. Jiangsu Key Laboratory for Intelligent Agricultural Equipment, Nanjing 210031, China）
The farmlands in South Jiangsu province in China usually have characteristics of small acreage with fixed field boundary, balanced fertility inside one field plot and possibly significant fertility difference among different field plots even though some plots are close to each other. The reason for this phenomenon is that farmlands have been already assigned to rural families in small-scale-size plots for decades and the field plots are farmed by rural families independently. Rural families have a good understanding of overall soil fertility and yield potential about their own field plots, but they are not very clear about the matching relationship of target plant production and the needed amount of fertilizer for each field plo
ISSN:1002-6819
DOI:10.11975/j.issn.1002-6819.2018.03.005