Abstract: This article has studied slowing release N fat to the cotton and the paddy rice growth growth influence, finally indicated: Slowing release N is fat and N fat to the cotton and the paddy rice output and the quality not obvious difference; But compares can obviously enhance the cotton the output, the bell number, the bell heavy gin turnout has the increase, a high increase, the fruit-bearing branch number increases, but to textile fiber quality not tremendous influence;Slowing release N fat fat compares the paddy rice community with N in a big way, stooling strong, Cheng Suilv high, ear of number of seeds many, the output production increase is remarkable; The quality hasthe big enhancement.