[Relationship of NO3(-)-N, NO2(-)-N accumulation in some crop seeds with N fertilizers application].
From 1996 to 1997, the effect of applying organic and chemical fertilizers on NO3- and NO2- 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 NO2- 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 NO3- and NO2-), while in chemical N fertilizer trials, it existed between total N in soil and NO3- in seeds. For kidney beans and red small beans, the dynamics of NO3-/NO2- 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 NO3- and NO2- in all four crop seeds.
Qin
Y
Y
College of Plant Science and Technology, China Agriculture University, Beijing 100094. qyuchuan@cau.edu.cn
D007887:Fabaceae / Q000378:metabolism*; D005308:Fertilizers; D009566:Nitrates / Q000378:metabolism*; D009573:Nitrites / Q000378:metabolism*; D012639:Seeds / Q000737:chemistry / Q000378:metabolism*
D005308:Fertilizers; D009566:Nitrates; D009573:Nitrites