两种超期贮存除草剂在水稻薄膜秧田的除草效果

Effect of Weed Control about Herbicides of Long Time Storage on Rice Seedling Bed with Polythene Mulch

在室内阴凉、通风、干燥条件下，Ｓａｔｕｒｎ５０ＥＣ贮存５年、１０年后，Ｓｏｆｉｔ３００ＥＣ贮存５年后，在水稻薄膜秧田播种后盖膜前作土表处理（Ｓａｔｕｒｎ５０ＥＣ２２５０ｍｌ／ｈｍ￣２，Ｓｏｆｉｔ３００ＥＣ１５００ｍｌ／ｈｍ￣２，Ｓｔｕｒｎ５０ＥＣ１１２５ｍｌ／ｈｍ￣２＋ｓｏｆｉｔ３００ＥＣ７５０ｍｌ／ｈｍ￣２），对稗（Ｅｃｈｉｎｏｃｈｌｏａｃｒｕｓｇａｌｌｉ（Ｌ．）Ｂｅａｕｖ．）和牛毛草（Ｅｌｅｏｃｈａｒｉｓａｃｉｃｕｌａｒｉｓ（Ｌ．）Ｒ，Ｂｒ．）的防除效果均在８０％以上，并且对催芽稻种无不良影响。

After five and ten years Satum 50EC was stored and five years Sofit 300ECstored in a room with ventilative,cool and dry condition, they were applied on the soilsurface of rice seedling bed before polythene mulch applied and after rice seeds drilled,with 2 250 ml / hm2 Saturn 50EC, 1500 ml / hm2 Sofit 300EC and 1125 ml / hm2 Satum50EC + 7 50 ml / hm2 Sofit 300EC. Results indicated that over 80 % of Echinochloacrus-galli(L.)Beauv.and Eleocharis acicularis( L.)R. Br.were killed and no anygerminated rice seed was intoxicated