作物籽粒中NO_3^-N和NO_2^--N的积累与氮肥种类和数量的关系  

Relationship of NO_3^-N,NO_2^--N accumulation in some crop seeds with N fertilizers application.

作　　者：秦玉川[1] 

机构地区：[1]中国农业大学植物科技学院,北京100094

出　　处：《应用生态学报》2000年第1期87-90,共4页Chinese Journal of Applied Ecology

基　　金：农业部重点资助项目!(Z96J1 8)

摘　　要：1996～1997在芸豆(云南)、红小豆(河北)、大豆(黑龙江)和花生(山东)绿色食品产地,研究了施用有机肥和化肥对这些作物籽粒中NO-3、NO-2的累积特点.结果表明,芸豆和红小豆不论施用有机肥还是尿素,土壤中的速效氮与籽粒中NO-2的灰色关联最好;施用有机肥的最大关联度分别出现在土壤库内部(全氮与速效氮之间)或籽粒库内部(NO-3、NO-2之间);而施用化肥的最大关联度分别出现在土壤库与籽粒库的全氮与NO-3之间.芸豆和红小豆随着施肥水平的提高,籽粒中NO-3/NO-2比值动态变化趋势因施用有机肥和施用化肥而不同.From 1996 to 1997,the effect of applying organic and chemical fertilizers on NO\+-\-3 and NO\+-\-2 accumulation in crop seeds was studied in four green food bases of kidney beans (Yunan Province),red small beans (Hebei Province),soybeans (Heilongjiang Province), and peanuts (Shandong Province).For kidney beans and red small beans,the highest grey correlation was existed between available N in soil and NO\+-\-2 in seeds,no matter whether organic fertilizer or urea was applied.In organic fertilizer trials,the highest grey correlation appeared in soil pool (between total N and available N)or seed pool (between NO\+-\-3 and NO\+-\-2),while in chemical N fertilizer trials,it existed between total N in soil and NO\+-\-3 in seeds.For kidney beans and red small beans,the dynamics of NO\+-\-3/NO\+-\-2 in seeds was different with the kind of fertilizers applied. Extremely significant negative linear correlation and positive linear regression were existed between the content of NO\+-\-3 and NO\+-\-2 in all four crop seeds.

关 键 词：作物子粒 NO^-3-N NO^-2-N 有机肥 化肥 氮肥 

分 类 号：S147.21[农业科学—肥料学]