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据美国俄勒冈大学一组研究人员证实,在夜间耕耘的田里生长的杂草要比白天耕耘的田里生长的杂革减少一半以上。甚至白天耕耘时,在犁刀上方安置一个用
According to a team of researchers at the University of Oregon, it has been confirmed that weeds grown in fields cultivated at night are reduced by more than half compared with those grown in fields cultivated during the day. Even during daytime, place one above the coulter