CAJ | 학술논문

通过喷雾法和拌肥撒施法进行56％2甲4氯钠可溶性粉剂不同剂量、与不同药剂混配的田间防效试验。结果表明，2甲4氯钠252～504 g／hm2喷雾对丁香蓼、耳叶水苋、鳢肠、陌上菜、水竹叶、日照飘拂草、异型莎草等阔叶类和莎草科杂草有很好的防除效果，药后13 d 对阔叶杂草、莎草科杂草的防效可达90％以上，对总草的防效在80％以上；与五氟磺草胺、氰氟草酯、唑酰草胺混配喷雾可提高防除效果，对总草防效达96．34％～97.51％，且对直播水稻生长安全，可在生产上推广应用。
통과분무법화반비살시법진행56％2갑4록납가용성분제불동제량、여불동약제혼배적전간방효시험。결과표명，2갑4록납252～504 g／hm2분무대정향료、이협수현、례장、맥상채、수죽협、일조표불초、이형사초등활협류화사초과잡초유흔호적방제효과，약후13 d 대활협잡초、사초과잡초적방효가체90％이상，대총초적방효재80％이상；여오불광초알、청불초지、서선초알혼배분무가제고방제효과，대총초방효체96．34％～97.51％，차대직파수도생장안전，가재생산상추엄응용。
Efficacy trials of MCPA -sodium 56% SP on weeds in a direct seeded rice field were carried out by spraying and broadcasting.The formulated herbicide provided good control of broad -leaf weeds and cyperaceae weeds such as Ludwigia prostrata Roxb.,Ammannia arenaria H.B.K.,Eclipta prostrata L.,Lindernia procumbens (Krock.)Philcox, Murdannia triquetra (Wall.)Bruckn.,Fimbristylis miliacea (L.)Vahl.and Cyperus difformis L.Efficacy against broad-leaf,cyperaceae and total weeds at 1 3 days after application were above 90%,90% and 80% at the usage rates of 252 ~504 g/hm2 ,respectively.Field trials also indicated that 56% MCPA -sodium SP satisfactorily controlled weeds when mixed with penoxsulam,cyhalofop -butyl,or metamifop in which cases efficacy reached 96% to 98%.Formulated 56%MCPA -sodium SP was safe and suitable to apply widely for controlling weeds in direct seeded rice.