扒土晒根的好处1.促进根系发育。当玉米苗期第一层次生根扎下土后,扒土晒根,将第二、三层次生根暂时憋住,培土后大量次生根再继续发生出来,生命力旺盛,不早衰,能促进玉米对水分和养分的吸收。2.蹲苗促壮。据调查,扒土后3天,幼苗基部变紫,5天变深绿,放 Grilled soil drying root benefits 1. To promote root development. When the first stage of corn seedling rooted under the soil, Grilled soil drying root, the second, three levels of rooting temporarily hold back, earth after a large number of secondary roots and then continue to emerge, vitality, not premature failure, can promote corn moisture And nutrient absorption. 2. Dunmiao Zhuang Zhuang. According to the survey, 3 days after digging the soil, the base of the seedling becomes purple and becomes dark green on 5 days