灭草松·2甲4氯水剂防除水稻田杂草初探

Preliminary Study of Bentazone·chipton to Prevent the Weeds in the Rice Field

试验结果表明,用460g/L灭草松·2甲4氯水剂有效成分1150~1380g/hm2防除水稻移栽田阔叶杂草及莎草科杂草,于阔叶杂草3~5叶期喷雾处理,对移栽水稻田鸭舌草、陌上菜、耳叶水苋、异型莎草等均有良好的防效,优于两对照单剂的防效,药后25d,总草鲜重防效在93.9%~97.2%,且对水稻安全。

The Bentazone · chipton AS was tested to prevent the weeds in the rice field. The results showed that the AS sprayed with 460g/ml in the rice transplanting field can has a good curative effect to prevent the broad-leaf weed and sedge weed. While it sprayed with 1150～1380g/ha in the rice transplanting field during the 3～5 leaf stage of the broad-leaf weed can also have a good curative effect to prevent other weeds such as monochoria vaginalis,linderniaprocumhens,ammanniaarenaria,and cyperusdifformis. The curative effect of the AS is better than that of the other two contrast agents. 25 days after spraying, the preventive of the weeds can reach 93.9 % ～ 97.2 %, and also safe to the rice.