DE-638防除水稻直播田杂草试验

Experiment on Weed-control in Direct-planting Rice Fields with DE-638

2002～2003年进行了2.5%DE-638OD防除直播稻田杂草效果及对水稻安全性的田间小区试验。结果表明,2.5%DE-638OD对直播稻田杂草防效较好,施药适期长,持效期长,在有效防除直播稻田稗草的同时,还可有效的防除雨久花、狼巴草等阔叶杂草,并对水稻安全,DE-638适宜的施药剂量为22.5～37.5g.ai/hm2,适宜的施药方法为喷雾法。

The experiment on weed-control and safety to rice of 2.5%DE-638 OD in direct-planting Rice Fields was conducted during 2002 and 2003.The results showed that 2.5%DE-638 OD had good effect on weed-control. the suitable application period and the residual effect was longer. The herbicide could effedtively control barnyardgrass, at the same time it could effeetively control broad-leaf weeds such as Arrowleaf Monochoria, Bur Beggarticks etc. DE-638 was safe to rice plant. The suitable dosage is DE-638 15~37.5g.ai/hm2 and the suitable method is by spray.