虽然我国农田杂草综合治理已经取得了长足进步，但杂草危害、演替、抗药性、除草剂药害等问题仍相当严重。

Although we have achieved great progress in the general control of the weed, there are also some serious problems in the harms of the weed, succession, drug-fast and the pollution of the herbicide.

youdao

掌握寒地水田杂草发生种类及优势种群，对制定杂草综合治理方案，科学选用化学除草及其配套技术具有指导意义。

Grap the cold-field paddyfield's characteristic and preponderant colony have the directive sense to constitute father's precept of weed, choose chemic weed scientific and its measure.

youdao

清除田间杂草，区域联片种植、培肥地力、促进玉米发育、结合追肥根施药剂及轮换用药等是综合治理抗性叶螨的重要技术措施。

Weeds eradication, regional continuous planting, adequate fertilization, rotational insecticide control are important technical measures of integrate control to truncate leaf mites.

youdao