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对吉林西部连作玉米１０～２０年的地块耕层土壤进行研究。结果表明，长期连作玉米的黑钙土、风沙土中细砂复合体含量较高，粘粒及粉粒复合体含量次之。黑钙土中各级复合体的合碳量均随粒径的增大而减少，风沙土中粉粒复合体合碳量增多，有的甚至超过粘粒复合体。两类土壤粘粒复合体的含碳量与粘粒复合体及矿质粘粒含量间有显著负相关，粉粒复合体的含碳量也有类似趋势。注重施用有机肥或将秸秆，根茬还田能提高土壤有机质含量，并使粉粒复合体含量及其有机碳贮量增加。
The topsoil of plots of continuous cropping maize in the west of Jilin Province for 10 ~ 20 years was studied. The results showed that the content of fine sand complex in sandy soil was higher than that in long-term continuous cropping of corn, followed by the content of clay and grain-size complex. Carbon content of the complexes in all types of Chernozem decreased with the increase of the particle size, and the amount of carbon in the composite was increased in the aeolian sandy soil, and some even exceeded that of the clay complex. There was a significant negative correlation between the carbon content of the two types of soil clay aggregates and the clay clay composites and mineral clay contents. The carbon content of the silt complex also showed a similar trend. Pay attention to the application of organic fertilizer or stalks, stubble back to the soil can increase soil organic matter content, and make the grain content and organic carbon storage increased.