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过去玉米收获后都是刨出根茬扔出地外或者烧掉,这样不仅浪费有机肥料,而且还把根茬上的抱根肥土也扔掉了。我们在郑庄公社中乡大队随意秤了100个扔出地外的根
In the past, corn stalks were thrown out of the ground or burned after harvest, which not only wastes organic fertilizers, but also discards the roots and roots of stubble. We Zhengzhuang commune in the township brigade randomly weighed 100 throwing roots