为筛选适宜的蘑菇渣代替草炭栽培基质配方，以处理PT1（草炭︰蘑菇渣=1︰0）为对照，研究不同蘑菇渣配比的栽培基质氮素动态变化及其对番茄幼苗氮素营养状况的影响。结果表明：处理PT2（草炭︰蘑菇渣=1︰1）的栽培基质氮含量为对照的1.1倍、氮吸收量为对照的1.2倍、生物量为对照的1.5倍、植株氮含量和叶绿素含量都比较接近对照；处理PT6（草炭︰蘑菇渣=2︰1）的氮吸收量为对照的2倍，生物量为对照的2.5倍，基质氮含量、植株氮含量和叶绿素含量都接近对照；处理PT9（草炭︰蘑菇渣=0︰1）的基质氮含量、植株氮含量、氮吸收量、生物量和叶绿素含量都明显低于对照，说明处理PT2、PT6可以作为蘑菇渣代替草炭的基质配比，处理PT9不适合作为番茄生长的基质配比。

In order to screening mushroom compost instead of peat on substrate formula, PT1 treatment (peat︰mushroom compost = 1︰0) was used as control, study on different mushroom compost proportion of the cultivation of dynamic change and substrate nitrogen (N) tomato seedlings the nutrition status. Results show that PT2 treatment (peat︰mushroom compost = 1︰1) for the cultivation of N content of control substrate for 1.1 times, N uptake 1.2 times, biomass 1.5 times, plant N and chlorophyll content are close to control; PT6 treatment (peat︰mushroom compost = 2︰1) N uptake ，biomass N content are compared to control of 2 and 2.5 times respectively. substrates, plant and chlorophyll content N content are close to control; PT9 treatment (peat: mushroom compost =0:1) of substrate N content, plant N, N absorption, biomass and chlorophyll content is much lower than control. PT2 and PT6 treatment can handle the mushroom compost instead of peat as the substrate formula, and PT9 treatment is not suitable.