东北地区春玉米施肥现状调查

2008年通过对东北地区443个农户施肥调查资料的分析，了解到东北地区平均N、P2O5 、K2O的施用量分别为207 kg/hm2、100 kg/hm2、65kg/hm2，比例为1:0.5:0.3；施用高氮肥的农户所占的比例为33%，施用有机肥的农户只占总调查农户数量的6%；进行追肥的农户达到了65%；根据习惯、地力和技术手册来确定肥料用量的比例分别为69%、37%和3%。

PRESENT SITUATION OF FERTILIZER APPLICATION ON SPRING MAIZE IN NORTHEAST CHINA

For understanding present situation of fertilizer applying on spring maize,finding out the unreasonable fertilization and then to put forward the reasonable proposal of maize fertilization in Northeast China.The study analyzes 433 farmer ’s stochastic questionnaire investigations.The results shown that,the average application rate of N,P 2 O 5 and K 2 O was 207 kg/hm 2 ,100 kg/hm 2 and 65 kg/hm 2 respectively,the proportion of fertilizer （N：P 2 O 5 ：K 2 O） on spring maize is 1：0.5：0.3;nitrogen,phosphorus and potassium application appropriate rate is 38.9%,22.3% and 38.5% respectively;Unreasonable fertilization has become a prominent problem,phosphorus application rate is overused in 58.9% and potassium application rate is not enough in 48.6%,while only 6% applied organic fertilizer.69% farmers determine fertilizer application based on their experience,37% based on field production,and only 3% accord to technical manuals.