稻田用除草劑如何避免藥害發生
1,必須堅持先試驗後應用的原則。
2,嚴yan格ge掌zhang握wo除chu除chu草cao劑ji使shi用yong技ji術shu,首shou先xian要yao根gen據ju防fang治zhi雜za草cao需xu要yao,考kao慮lv作zuo物wu敏min感gan性xing選xuan用yong對dui口kou,農nong藥yao,其qi次ci要yao嚴yan格ge控kong製zhi用yong藥yao量liang,另ling外wai,配pei藥yao要yao正zheng確que,必bi須xu進jin行xing二er次ci稀xi釋shi法fa,才cai能neng配pei藥yao均jun勻yun。
3,shiyaobixuzhangwofangzhishiqiheshiyaofangfa,rushuidaoyangtianshiyonghedazhuangyaozaiyangmiaoyiyeqihou,guozaoshiyonghuichanshengyaohaidanyebunengguochi,guochiyingxiangchucaoxiaoguo,shiyaofangfayebixuzhuyi,rulecaolongyongpenwushiyaodaomiaoyaochanshengyaohai。
4,施藥時要注意天氣狀況,如很多除草劑使用後如遇低溫或高溫天氣,作物都很容易發生藥害。
5,必須注意土壤性質和田塊平整度,如水稻秧田秧板必須平整,注意保持3~5厘米淺水層5~7天。
6,要(yao)注(zhu)意(yi)作(zuo)物(wu)生(sheng)長(chang)情(qing)況(kuang),如(ru)弱(ruo)苗(miao)田(tian)或(huo)拋(pao)秧(yang)田(tian)尚(shang)未(wei)立(li)苗(miao)時(shi)使(shi)用(yong)除(chu)草(cao)劑(ji)很(hen)容(rong)易(yi)發(fa)生(sheng)藥(yao)害(hai),藥(yao)害(hai)事(shi)故(gu)一(yi)旦(dan)發(fa)生(sheng),可(ke)采(cai)用(yong)施(shi)肥(fei)補(bu)救(jiu),排(pai)灌(guan)補(bu)救(jiu)或(huo)用(yong)植(zhi)物(wu)生(sheng)長(chang)調(tiao)節(jie)劑(ji)補(bu)救(jiu)等(deng)方(fang)法(fa),以(yi)緩(huan)解(jie)或(huo)減(jian)輕(qing)藥(yao)害(hai)程(cheng)度(du),恢(hui)複(fu)作(zuo)物(wu)正(zheng)常(chang)生(sheng)長(chang)。http://98fo.cn



