农作物气体污染田间现场鉴定技术

农作物受气体污染危害经常发生，规范的田间现场技术鉴定是科学、客观、公平、公正实施鉴定的基础。本文介绍了田间现场技术鉴定常见内容，提出了现场核查、调查走访、勘察事故现场、观察植株症状、鉴别确认污染物、农作物污染程度分级分类、农作物产量损失测评等田间鉴定的程序、方法、技术。

On-site Field Inentification Techniques That Grops Polluted By Gas

Air pollution often damages crops,how to identify the damage scientifically,objectively and fairly depends on the standard evaluation and identification technologies.But at present China is lack of the technical regulations.After analyzing the seven characteristics appearing on the polluted crops,the author points out whether crops are polluted can be identified by the exclusive method,comparative method of symptom,synthetic analysis method;The output damage should be evaluate by the output,then the author introduces some common field site technical identification and evaluation content about this,the article also shows us the procedures,methods and technologies of identification and evaluation,which can be used in the practice,such as how to investigate,survey,observe and identify the symptom and the damage caused by the air pollution and so on.