精细农业田间信息采样策略  

Sampling Strategies of Field Information on Precision Agriculture

作　　者：张淑娟[1] 方慧[2] 何勇[2] 

机构地区：[1]山西农业大学工程技术学院 [2]浙江大学生物系统工程与食品科学学院

出　　处：《农业机械学报》2004年第4期88-92,共5页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家自然科学基金资助项目(项目编号:30270773);教育部高校优秀青年教师教学科研奖励基金资助项目(项目编号:02411);浙江省自然科学基金资助项目(项目编号:301270);山西省科技攻关基金资助项目(项目编号:021028)

摘　　要：为研究田间空间变异性信息和采样策略 ,对 13.3hm2 冬小麦田以 5 0 m× 5 0 m栅格测得 6 3个数据 ;设计不同采样方案 ,用克立格法插值绘空间分布图 ,用最小显著差数法检验 ,得最佳采样方案。结果表明 ,不同田间信息应选不同采样方案 ;同种信息同采样点数和间距 ,采样位置不同 ,其变异性描述也不同 ;5 0 m× 10 0 m、15 0 m× 15 0 m右和 10 0 m× 2 0 0 m采样方案对所有田间信息都适用 ,15 0 m× 15 0 m左采样方案对速效磷、含水量和土壤密度都不适用。In order to get soil properties and yield information in field, the total 63 sampling points from a 50 m×50 m sampling grid of 13 3 hm 2 winter wheat field were obtained. Based on the all sampling data, the least required numbers of soil properties and yield data were calculated. The data was inspected by lest significant difference (LSD) method. The results showed that the different field information should select different sample schemes for describing field information spatial variability; the field information with the same sample point count and interval but different sample position, the describing result of spatial variability are different; the 50 m× 100 m, 150 m×150 m right and 100 m×200 m sampling schemes can be used for all field information, and 150 m×150 m left sampling scheme is inapplicability for soil available P, moisture water content and soil bulk density.

关 键 词：精细农业 田间信息 空间变异性 采样策略 克立格法插值 

分 类 号：S126[农业科学—农业基础科学]