【摘要】 通过1989～1991年研究结果表明;5.3％丁西G对稻田禾本科杂草、莎草科杂草、阔叶杂草均有较好的防效;最佳施药量:低海拔(580m)地区为500～800g/亩,中海拔(1140m)地区和高海拔(1700m)地区为1500g/亩;最适施药期为水稻移栽后天5,毒土(或毒砂)撒施;对水稻安全,不会造成药害。通过21500亩大面积示范,防除杂草效果87.6～99.4％,稻田平均增产4.46％。更多还原

【Abstract】 The result indicated that the efficiency of controlling the grass family weeds (Gramineae), sedge family weeds (Cyperaceae) broad leaf weeds by using 5.3% butachor-simetryme DF were high during 1989-1991. The best rate was 500-800g/mu in lower elevation areas (580m), 1500g/mu in middle elevation areas (1140m) and high elevation areas (1700m). The best application time 5 days after transplanting rice. Application method of broadcat soil or sand mixing with 5.3% butachor-simetryme DF was very safe to rice. The efficiency of controlling weeds was 87.6-99.4 in 21500mu. demonstrated field.更多还原