寒地水稻移栽田防治稗草分期施药技术研究

Studies on Herbicide Application by Stage to Control Barnyard Grass in Paddy Field of Cold Region

针对常规寒地水稻移栽田前期除稗剂多采用一次性施药,药效和安全性差的问题,通过对寒地水稻移栽田稗草的防治采取插前5～7 d、插后15～20 d分期施药试验研究,结果表明:分期施药对稗草防治效果好,提高了对水稻的安全性。

In order to solve the problems existing in conventional herbicide application once to control barnyard grass at the early stage of transplanting in the cold region, such as low herbicide effect and less security, the herbicides were applied twice, that is, five to seven days before transplanting and 15 to 20 days after transplanting. The results showed that the barnyard grass control effect was good and the security to rice was increased.