The characters of mineral nutrition uptake and efficiency of tiller production in upland rice were studied with pond culture experiment.The results indicated that: the soil moisture remarkably influenced N

P

K nutrition uptake.With the improvement of the content of soil moisture

the mineral nutrition uptake amount improves notably.During the early tillering stage

the nutrition absorption amount of N

P and K at 65% soil moisture were 74.1%

43.9% and 50.8% of 100% soil moisture respectively

and at later tillering stage

the N

P and K absorption amount of 65% were 41.4%

18.6% and 27.5% of 100%.The maximum efficiency of tiller production with mineral nutrition was 85% of soil moisture

the mineral nutrition of N

P and K tillering productive efficiency of 85% were 35.7%

140% and 81.8% more than 100%

respectively.The mean tillering productive efficiency were P>K>N.