基于高分一号影像数据的水稻定量施肥可视化  

Visualization of Quantitative Fertilization of Rice Based on Image Data of GF-1

作　　者：李新伟 陶新宇 马露露 张官进 LI Xin-wei;TAO Xin-yu;MA Lu-lu;ZHANG Guan-jin(Resource and Environment College,Anhui Science and Technology University,Chuzhou 233100,China;Oasis Ecology Agriculture of Xinjiang Bingtuan Laboratory,Shihezi 832003,China)

机构地区：[1]安徽科技学院资源与环境学院,滁州233100 [2]新疆生产建设兵团绿洲生态农业重点实验室,石河子832003

出　　处：《科学技术与工程》2020年第19期7622-7626,共5页Science Technology and Engineering

基　　金：安徽高校自然科学研究重点项目(KJ2016A173,KJ2019A0819);新疆建设兵团绿洲生态重点实验室开放课题发展基金(201903);企业委托研发项目(880141)。

摘　　要：为提高水稻施肥便捷和精准的生产管理能力,实现实时监测和决策一体的可视化定量施肥,利用高分一号卫星遥感(GF-1)影像数据,研究了以多种典型植被指数的水稻分蘖期、拔节期和抽穗期等关键生育时期的氮素营养诊断模型,临界诊断植被指数值和定量追肥模型,并实现了氮素营养诊断和定量施肥推荐的可视化表达。研究结果表明:建立的水稻关键生育时期分蘖期、拔节期和抽穗期的最优植被指数临界诊断值分别为-0.384、0.658和0.782;根据水稻氮肥效应曲线的分析得到的总施氮量(298.4 kg/hm^2)和最佳经济施肥量(285.5 kg/hm^2);综合水稻施氮总量与最优植被指数值线性关系、最佳施肥量、最高施肥量可得定量追肥模型。水稻关键生育时期的氮素营养诊断和定量模型的建立,实现了定量施肥可视化表达。In order to improve the ability of convenient and precise production and management of rice fertilization and realize the visualized quantitative fertilization integrated with real-time monitoring and decision-making, the nitrogen nutrition diagnosis model was studied. And critical diagnosis vegetation index value and quantitative topdressing model of rice growth period such as tillering period, jointing period and heading period with a variety of typical vegetation indexes were researched by using the remote sensing image data of Gaofen-1 satellite. And the visualization expression of nitrogen nutrition diagnosis and quantitative fertilization recommendation was realized. The results show that the critical diagnostic values of the optimal vegetation index of tillering stage, jointing stage and heading stage are-0.384, 0.658 and 0.782, respectively, and the total nitrogen application(298.4 kg/hm^2) and the optimal economic fertilizer application(285.5 kg/hm^2) are obtained from the analysis of the effect curve of nitrogen fertilizer on rice. The quantitative topdressing model can be obtained by combining the linear relationship between the total amount of nitrogen application and the optimal vegetation index, the optimal amount of fertilizer application and the maximum amount of fertilizer application. The diagnosis of nitrogen nutrition and the establishment of quantitative model in the critical growth period of rice have realized the visual expression of quantitative fertilization.

关 键 词：卫星遥感 水稻 氮素诊断 施肥模型 可视化 

分 类 号：S127[农业科学—农业基础科学]