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.
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.
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。
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