松辽平原玉米带高产与平产土壤碳氮含量研究  

Study on the Content of Carbon and Nitrogen in High and Normal Yield Soil of the Corn Belt of Songliao Plain

作　　者：张志丹[1] 李春丽[1] 赵兰坡[1] 杨学明 王鸿斌[1] 王楠[1,3] 王淑华[1] 周雅娟[1] 

机构地区：[1]吉林农业大学资源与环境学院/吉林省生态恢复与生态系统管理省部共建国家重点实验室培育基地,长春130118 [2]加拿大农业部温室及加工作物研究中心 [3]吉林农业科技学院,吉林132101

出　　处：《玉米科学》2011年第6期95-100,共6页Journal of Maize Sciences

基　　金：国家自然科学基金项目(31071862);吉林省科技发展计划项目(20110749);吉林农业大学博士启动基金(201104)

摘　　要：以松辽平原玉米带高产培育土壤与平产土壤(常规耕作土壤)为研究对象,在田间调查采样的基础上,研究土壤有机碳与全氮在松辽平原不同地区两种土壤中的含量分布状况。结果表明,乾安、公主岭和扶余3地的高产土壤有机碳与全氮含量较高,而在其他地区高产土壤的有机碳与全氮含量则低于平产土壤。各采样地区之间C/N差异较大,对于C/N较低的土壤,高产培育措施可以有效提高其C/N。相同采样地区的高产土壤与平产土壤的C/N较为相近,没有显著差异。松辽平原玉米带耕层与犁底层的交界面随耕作方式的不同而呈现"波浪"和"平面"两种形态,平面型耕地作物产量更高。高产土壤不同深度下的碳氮含量分布也不同,呈现表面聚集的趋势。因此,改善松辽平原玉米带土壤肥力特征,需要综合考虑施肥方式、土壤特性等多种因素。On the base of field experimentation and sampling, the high yield and normal yield soils from the corn belt of Songliao Plain were studied to know the distribution of soil organic carbon （SOC） and total nitrogen （TN） in two kinds of soil. The results showed that the content of SOC and TN in Qian’an, Gongzhuling and Fuyu’s high yield soil were higher than that in normal yield soil. And in other sample sites, the content of SOC and TN in normal yield soil were higher than those in high yield soil. There was a big difference among C/N of all sample sites. Measures for high yield could increase C/N, and C/N of high yield soil was almost the same as the C/N of normal yield soil for all sample sites. The interface between the cultivated layer and the plough sole in the soil profile was different according to the farming method. Soil with ‘wave’ interface had higher yield than soil with ‘plane’ interface. The SOC and TN distribution of different depth of soil were also different. The content assembled at the top layer. So the way of fertilizing, the characteristic of soil and other factors should be considered for increasing crop yield.

关 键 词：玉米 土壤有机碳 全氮 松辽平原 

分 类 号：S513.061[农业科学—作物学]