File:Fertilizer applied to corn field.jpg

原始文件 (2,100 × 1,500像素,文件大小:1 MB,MIME类型:image/jpeg


描述
English: View of nitrogen fertilizer being applied to growing corn (maize) in a contoured, no-tilled field in Hardin County, Iowa. Applying smaller amounts of nitrogen several times over the growing season rather than all at once at or before planting helps the plants use the nitrogen rather than have it enter adjacent streams (i.e. create nonpoint source pollution.)
日期
来源 U.S. Department of Agriculture, Natural Resources Conservation Service. Photo no. NRCSIA99241
作者 Lynn Betts
授权
(二次使用本文件)
Public domain This image is a work of the Natural Resources Conservation Service, part of the United States Department of Agriculture, taken or made as part of an employee's official duties. As a work of the U.S. federal government, the image is in the public domain in the United States.

说明

添加一行文字以描述该文件所表现的内容

此文件中描述的项目

描繪內容

文件历史

点击某个日期/时间查看对应时刻的文件。

日期/时间缩⁠略⁠图大小用户备注
当前2010年2月2日 (二) 22:472010年2月2日 (二) 22:47版本的缩略图2,100 × 1,500(1 MB)Smartseadjust colours
2009年3月21日 (六) 21:372009年3月21日 (六) 21:37版本的缩略图2,100 × 1,500(1.23 MB)Moreau1{{Information |Description={{en|1=View of nitrogen fertilizer being applied to growing corn (maize) in a contoured, no-tilled field in [[Wikipedia:Har

以下页面使用本文件:

全域文件用途

以下其他wiki使用此文件:

元数据