黑龙江省耕层土壤养分变化趋势监测报告  

The Varied Trend of Topsoil Nutrient in Heilongjiang Province

作　　者：李英杰[1] 

机构地区：[1]黑龙江省农业监测中心,哈尔滨150090

出　　处：《黑龙江农业科学》2003年第2期15-17,共3页Heilongjiang Agricultural Sciences

摘　　要：黑龙江省土壤监测中心在全省范围内共建立了 5 2个土壤监测点 ,其中 :国家级监测点 12个 ,省级监测点 4 0个 ,监测点代表了黑龙江省土壤耕地面积的 70 %以上。通过 4年的监测 ,我省几大土壤类型的土壤肥力变化有如下规律 :(1)土壤有机质基本稳定 ;(2 )土壤中氮素基本平衡 ,磷素盈余 ,钾素缺 ;(3)全省土壤施肥水平氮 (N) :磷 (P2 O5) ) :钾 (K2 O)为 1∶1.12∶0 .70 ;(4)The Heilongjiang provincial monitor plots have been set up for 4 years. There are 52 soil monitor plots in the province, including 12 national level plots and 40 provincial level plots.These soil monitor plots stand for soil that more than 70% cultivated land in Heilongjiong Province. By 4 years monitor, we have realized varied trend of soil fertility in major soil types for Heilongjiong province.as follows:①The organic matter in soil has no varied basically.②The nitrogen is unchanged and the phosphorus is increased, but potassium is less in soil.③The fertilizer application rate in soil of total provincial average is:N∶P∶K=1∶1.12∶0.7.④The fertilized amount in Heilongjiong provincial is less than the average amount in China.

关 键 词：黑龙江 土壤养分 土壤监测 变化趋势 养分吸收量 

分 类 号：S158[农业科学—土壤学]