选取鸡粪为有机原料 ,进行发酵与不发酵两种前处理 ,设计 0、30 %、4 0 %、6 0 %和 10 0 % 5种有机氮水平 ,在水稻上连续两年试验。结果表明 ,在 4 0 %水平以下 ,作物产量随有机氮的增加而增加 ,超过 6 0 %产量下降 ,但有后效。氮素表观利用率与有机氮成正相关 ,当有机氮达到 10 0 %时 ,氮素利用率达到 5 3.4 %。随有机氮的增加 ,作物吸收养分向子粒中转移的比例也相应增加 Chicken manure was selected as the organic raw material for fermentation and non-fermentation two kinds of pretreatment, the design of 0,30%, 40%, 60% and 100% 5 kinds of organic nitrogen levels in rice two consecutive years of testing. The results showed that under the level of 40%, the crop yield increased with the increase of organic nitrogen, and the yield exceeded 60%, but the effect was later. The apparent nitrogen use efficiency was positively correlated with organic nitrogen. When organic nitrogen reached 100%, the nitrogen utilization rate reached 53.4%. With the increase of organic nitrogen, the ratio of crop nutrient uptake to grain transfer increased accordingly