症zheng狀zhuang由you於yu農nong藥yao使shi用yong劑ji量liang不bu當dang或huo施shi藥yao時shi間jian和he方fang法fa不bu當dang
，農nong藥yao中zhong的de化hua學xue物wu質zhi滲shen入ru植zhi物wu體ti後hou，引yin起qi植zhi物wu新xin陳chen代dai謝xie發fa生sheng變bian化hua，生sheng長chang發fa育yu受shou到dao抑yi製zhi，外wai部bu形xing態tai出chu現xian畸ji形xing。如ru除chu草cao劑ji2，4-d、百草敵等施用時
，特別是2，4-dhuifaxingqiang
，piaoyixianxiangyanzhong，wangwangshimaizhushouhai。tongshixiaomaizaiyousuifenhuaqi
，duinongyaominganxingzengqiang。yinci
，yichuxianyepianniuqu，suibunengzhengchangchouchu
，huochouchujixingsui
、小穗等現象。
　　
　　空氣汙染是由於汙染源排放了對植物有害氣體，如二氧化硫
、fuhuaqingdengduqi。yibanzaizhuanyaofujinzhiwuyiyufashengeryanghuatanduqishanghai，bingchangsuifengxiangchengpianfasheng。yeshangchuxianshuijinzhuangbuguizexingbankuai

，houyepianxibaozuzhihuaisichengxianhuangbaisehuobaisebankuai。
　　
　　防治方法　首先看清楚藥劑的劑型、含han量liang和he防fang治zhi對dui象xiang，然ran後hou嚴yan格ge按an照zhao操cao作zuo規gui程cheng使shi用yong。若ruo使shi用yong除chu草cao劑ji作zuo土tu壤rang處chu理li時shi，對dui有you機ji質zhi含han量liang高gao的de黏nian性xing土tu壤rang用yong藥yao量liang可ke稍shao多duo一yi點dian，砂sha壤rang上shang藥yao量liang可ke少shao些xie。在zai噴pen施shi除chu草cao劑ji時shi要yao注zhu意yi風feng向xiang並bing設she立li隔ge離li帶dai，以yi防fang止zhi藥yao液ye隨sui風feng漂piao浮fu傷shang害hai到dao鄰lin近jin作zuo物wu。噴pen灑sa除chu草cao劑ji的de噴pen霧wu劑ji應ying專zhuan用yong，否fou則ze施shi藥yao後hou應ying立li刻ke把ba噴pen霧wu劑ji衝chong洗xi幹gan淨jing
，以yi免mian殘can存cun藥yao物wu傷shang害hai其qi他ta作zuo物wu。