一、農用殺蟲劑殘留多久失效

農藥殺(sha)蟲(chong)劑(ji)是毒(du)性較大(da)(da)的(de)農藥，使用后(hou)通(tong)常(chang)會有一(yi)定(ding)的(de)農藥殘留(liu)，殘留(liu)期(qi)一(yi)般(ban)需(xu)要(yao)根據殺(sha)蟲(chong)劑(ji)品種和性狀而(er)定(ding)，一(yi)般(ban)來講(jiang)，乳油、懸浮劑(ji)等用于直接噴(pen)灑的(de)劑(ji)型對農作物的(de)污染相對要(yao)大(da)(da)一(yi)些，而(er)粉劑(ji)由于其容易(yi)飄散而(er)對環境和施(shi)藥者的(de)危害更大(da)(da)，下面是幾種常(chang)用農藥殺(sha)蟲(chong)劑(ji)的(de)殘留(liu)期(qi)：

10%氯(lv)氰菊酯(zhi)(zhi)(zhi)(zhi)乳油(you)(you)殘(can)(can)(can)(can)(can)留(liu)(liu)(liu)(liu)期(qi)為(wei)(wei)(wei)(wei)2-5天(tian)(tian)(tian)；2.5%溴氯(lv)菊酯(zhi)(zhi)(zhi)(zhi)殘(can)(can)(can)(can)(can)留(liu)(liu)(liu)(liu)期(qi)為(wei)(wei)(wei)(wei)2天(tian)(tian)(tian)；5%抗(kang)蚜威(wei)(wei)可濕性(xing)粉劑殘(can)(can)(can)(can)(can)留(liu)(liu)(liu)(liu)期(qi)為(wei)(wei)(wei)(wei)6天(tian)(tian)(tian)；1.8%愛福廠乳油(you)(you)殘(can)(can)(can)(can)(can)留(liu)(liu)(liu)(liu)期(qi)為(wei)(wei)(wei)(wei)7天(tian)(tian)(tian)；40.7%樂斯本(ben)乳油(you)(you)殘(can)(can)(can)(can)(can)留(liu)(liu)(liu)(liu)期(qi)為(wei)(wei)(wei)(wei)7天(tian)(tian)(tian)；20%滅掃利乳油(you)(you)殘(can)(can)(can)(can)(can)留(liu)(liu)(liu)(liu)期(qi)為(wei)(wei)(wei)(wei)3天(tian)(tian)(tian)；20%氰戊菊酯(zhi)(zhi)(zhi)(zhi)乳油(you)(you)殘(can)(can)(can)(can)(can)留(liu)(liu)(liu)(liu)期(qi)為(wei)(wei)(wei)(wei)5天(tian)(tian)(tian)；35%優(you)殺(sha)硫磷殘(can)(can)(can)(can)(can)留(liu)(liu)(liu)(liu)期(qi)為(wei)(wei)(wei)(wei)7天(tian)(tian)(tian)；20%甲氰菊酯(zhi)(zhi)(zhi)(zhi)乳油(you)(you)殘(can)(can)(can)(can)(can)留(liu)(liu)(liu)(liu)期(qi)為(wei)(wei)(wei)(wei)3天(tian)(tian)(tian)；10%馬(ma)撲立(li)克乳油(you)(you)殘(can)(can)(can)(can)(can)留(liu)(liu)(liu)(liu)期(qi)為(wei)(wei)(wei)(wei)7天(tian)(tian)(tian)；25%喹硫磷乳油(you)(you)殘(can)(can)(can)(can)(can)留(liu)(liu)(liu)(liu)期(qi)為(wei)(wei)(wei)(wei)9天(tian)(tian)(tian)；50%抗(kang)蚜威(wei)(wei)可濕性(xing)粉劑殘(can)(can)(can)(can)(can)留(liu)(liu)(liu)(liu)期(qi)為(wei)(wei)(wei)(wei)6天(tian)(tian)(tian)；5%多來寶(bao)可濕性(xing)粉劑殘(can)(can)(can)(can)(can)留(liu)(liu)(liu)(liu)期(qi)為(wei)(wei)(wei)(wei)7天(tian)(tian)(tian)。

溫馨提示：以上是正常使用情(qing)況下(xia)的(de)殘留期，如果遇到下(xia)雨的(de)話(hua)，大(da)概(gai)殘留1-2小(xiao)時就會失(shi)效。

該圖片由注冊用戶"荊湖酒徒"提供，版權聲明反饋

二、如何去除農藥殺蟲劑的殘留

農業生產(chan)中為了(le)減少蟲害，會使(shi)用(yong)農藥殺蟲劑(ji)，然后農藥殺蟲劑(ji)噴施(shi)后會有一定的殘留(liu)，如果擔心的話，可(ke)以(yi)采取以(yi)下方(fang)法(fa)進(jin)行處理：

1、堿水浸泡法

先將蔬(shu)菜水果表面沖洗干凈，在堿水中浸泡5～10分鐘，然后用(yong)清(qing)水沖洗2～3遍。

2、臭氧洗脫法

用市(shi)售的臭氧發(fa)生器清(qing)(qing)(qing)洗和浸(jin)泡各類(lei)瓜(gua)果蔬菜，清(qing)(qing)(qing)洗和浸(jin)泡時(shi)間(jian)為10～20分鐘，可清(qing)(qing)(qing)除大(da)部分農藥(yao)殘留(liu)。

3、儲存法

部分農藥(yao)可(ke)隨時(shi)間流(liu)逝緩慢地分解為(wei)對人體(ti)無害的(de)物(wu)質(zhi)，因此對易于保存的(de)瓜果蔬菜(cai)(cai)可(ke)通過一(yi)定時(shi)間的(de)存放(fang)而減少農藥(yao)殘留量。此法(fa)適用于蘋果、冬(dong)瓜等不易腐爛(lan)的(de)水果蔬菜(cai)(cai)。這類水果蔬菜(cai)(cai)一(yi)般存放(fang)15天以上，即(ji)可(ke)去(qu)除大部分農藥(yao)殘留。

4、加熱法

氨基甲(jia)酸酯(zhi)類殺蟲(chong)劑(ji)會隨溫度升高而加快分解，因此可通過加熱去(qu)除部分農(nong)藥(yao)殘(can)留。此法可用(yong)于芹菜(cai)(cai)、菠菜(cai)(cai)、小白菜(cai)(cai)、圓(yuan)白菜(cai)(cai)、青椒(jiao)、菜(cai)(cai)花、豆角等(deng)。先用(yong)清(qing)水將(jiang)蔬菜(cai)(cai)表面洗凈，再放(fang)入沸水中焯2～5分鐘，再用(yong)清(qing)水沖(chong)洗1～2遍(bian)即可。

三、怎么預防農用殺蟲劑殘留危害

1、多買(mai)有(you)機食品。有(you)機農產品檢測到的殺(sha)蟲劑(ji)含量遠低(di)于(yu)常規(gui)種植(zhi)的食品。

2、徹底清洗果蔬。把水果或蔬菜放(fang)在(zai)流動的水下(xia)面沖洗，能比浸泡更(geng)有效地去除殘余農藥(yao)。