友谊农场是大型机械化国营农场.在场内垦后第七年的部分小麦田中,成片分布着黄苗现象.黄苗出现的原因非常复杂,但主要原因是耕层有包浆水层,上部表土干了,而耕层下部却有潜水层存在,当人们从地上走时就陷脚,但陷到耕层底部附近,就不再下陷了, Friendship Farm is a large-scale mechanized state-owned farms.After the reclamation in the seventh year of the part of the wheat field, into a piece of distribution of the phenomenon of yellow seedlings.The causes of the emergence of yellow seedlings is very complicated, but mainly due to the topsoil cap layer, the upper surface soil Dried up, and there is a submerged layer in the lower part of the tillage. When people walk from the ground, they fall into the trap, but they are trapped near the bottom of tillage and no longer subside,