Rice is C_3 plant and its companion, noxious weed barnyardgrass is C_4 plant.
水稻为三碳植物，其伴生性恶性杂草稗草为四碳植物。
Among of commonly used herbicide of control barnyardgrass in paddy, Molinate, Butachlor, Pretilachlor and Cyhalofop-butyl showed higher toxic reaction for barnyardgrass is resistant to quinclorac.
稻田常用的除稗除草剂中，禾大壮、丁草胺、扫氟特和千金对抗二氯喹啉酸突变型表现出比较高的毒性反应。
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