黑龙江省不同类型旱田土壤有机氮组分含量及分布  

Content and Distribution of Soil Organic Nitrogen in Different Types of Farmland in Heilongjiang Province

作　　者：姬景红[1] 刘双全[1] 李玉影[1] 郝小雨[1] JI Jing-hong;LIU Shuang-quan;LI Yu-ying;HAO Xiao-yu(The Key Lab of Soil Environment and Plant Nutrition,Research Center of Fertilizer Engineering and Technology of Heilongjiang Province,Institute of Soil Fertilizer and Environment Resources,Heilongjiang Academy of Agricultural Sciences,Harbin 150086,China)

机构地区：[1]黑龙江省土壤环境与植物营养重点实验室/黑龙江省肥料工程技术研究中心/黑龙江省农业科学院土壤肥料与环境资源研究所,黑龙江哈尔滨150086

出　　处：《黑龙江农业科学》2020年第9期38-41,共4页Heilongjiang Agricultural Sciences

基　　金：黑龙江省自然科学基金(D2017005)。

摘　　要：为建立土壤氮素合理培肥机制,本文分析比较了黑龙江省旱田种植条件下,草甸土、黑土和盐碱土有机氮各组分含量及分布。结果表明:土壤有机氮含量均随着土层深度的增加而降低,黑土20~40 cm较0~20 cm土层有机氮含量降低不显著,而草甸土和盐碱土则显著降低;在0~20 cm和20~40 cm土层,酸解有机氮含量及其占全氮的比例表现为草甸土和黑土显著高于盐碱土,非酸解氮含量及其占全氮比例为盐碱土显著高于黑土和草甸土;有机氮组分中酸解氮含量大于非酸解氮含量,酸解氮中未知态氮>氨态氮>氨基酸态氮>氨基糖态氮;盐碱土的氨基酸态氮含量及其占全氮比例高于黑土和草甸土,而氨态氮、氨基糖态氮和未知态氮含量及其占全氮比例则低于黑土和草甸土;草甸土和黑土的供氮能力强于盐碱土供氮能力。In order to establish a reasonable fertilization mechanism of soil nitrogen,the content and distribution of organic nitrogen were analyzed and compared in meadow soil,black soil and saline-alkali soil under the condition of field planting in Heilongjiang Province.The results showed that the content of soil organic nitrogen decreased with the increase of soil depth,the content of soil organic nitrogen in 20-40 cm layers of black soil was not significantly lower than that of in 0-20 cm,but significantly lower in meadow soil and saline-alkali soil,and in 0-20 cm and 20-40 cm soil layers,the content of acidolysis organic nitrogen and its proportion to total nitrogen in meadow soil and black soil were significantly higher than that in saline-alkali soil,and the content of non-acidolysis organic nitrogen and its proportion to total nitrogen in saline-alkali soil were significantly higher than that in black soil and meadow soil.The content of acidolysis nitrogen in organic nitrogen was higher than that in non-acidolysis nitrogen,unknown nitrogen>ammonia nitrogen>amino acid nitrogen>amino sugar nitrogen in acidolysis nitrogenthe,and the content of amino acid nitrogen in saline-alkali soil was higher than that in black soil and meadow soil,the content and proportion of ammonia nitrogen,amino sugar nitrogen and unknown nitrogen were lower than that of black soil and meadow soil,and the nitrogen supply ability of meadow soil and black soil was stronger than that of saline soil.

关 键 词：土壤类型 有机氮组分 旱田 

分 类 号：S15[农业科学—土壤学]