4.明垡耕犁走过后,翻起的垡呈现连续明亮条状,这种状态称为明垡。明垡经日晒风干后非常坚硬,既增加耙地的困难,又破坏土壤的团粒结构,降低抗御早涝自然灾害的能力,对农作物的生长不利。原因主要是由于耕作时土壤所含水分过大(一般超过40%)所致。检查方法地块耕完后,在总面积内进行检查,统计出明垡的面积,求出明垡所占的比例,即明垡率。解决方法 4. Ming 垡 plow after walking, turned up 垡 continuous bright strip, this state is called 垡. After being dried in the sun, the mulberry leaves are very hard, not only increasing the difficulty of harrowing, but also destroying the aggregate structure of the soil and reducing the ability to resist natural disasters caused by early floods and floods, which is unfavorable to the growth of crops. The main reason is due to soil moisture contained in farming is too large (usually more than 40%) due. Inspection methods After the cultivation of land parcels, the total area of ​​inspection, statistics out the area of ​​Mingxu, find out the proportion of Mingzhu, that Ming rate. Solution