黑龙江省土壤有机质与全氮和碱解氢的相关分析

黑龙江省的暗棕壤、白浆土、黑土、黑钙土、草甸土和沼泽土表层有机质，全氮和碱解氮均存在极显著的相关关系，而在泥炭土和水稻土上其相关性稍差，接近岩性发育较弱的盐土、碱土、冲积土和风沙土的有机质，全氮和碱解氮之间无相关性。分析结果表明，在主要旱作土壤上，有机质可以代表土壤的供氮水平。用扩散吸收法测定碱解氮在黑龙江省是适用的。

CORRELATION ANALYSIS OF SOIL ORGANIC MATTER, TOTAL NITROGEN AND AVAILABLE NITROGEN IN HEILONGJIANG PROVINCE

In Heilongjiang province, the correlation between organicmatter, total nitrogen and ayailable nitrogen are highly significant indark brown soil, Albic soils, Black soils, Chernozems, Meadow soilsand Bog soils, slightly significant in peat soils and peddy soils, andsignificant in solouchak, solonetz, aluyial soils and aeolian sandy soils.Results indicat that the soil organic matter may delegate the supplylevel of nitrogen. Hydrolyzed the soil sample with 1.2N NaoH andabsorbed by boron acid for analysis of the Available nitrogen is a suitablemethod in Heilongjiang province.