微生物对水田化肥氮素利用率的影响

通过改进施肥方法和施用微生物肥料,探讨对稻田土壤微生态环境及氮素转化动态的影响。结果表明,施用微生物肥料后,水稻根际微生态环境得到明显改善;提高水稻植株对化肥氮素的吸收量,增加土壤氮的残留,减少氮肥的挥发损失及反硝化作用。同时肥料深施也能大大减少氮素的损失,增加根际微生物数量,从而提高作物产量。

Effect of microorganism on Nitrogen utilization in paddy fertilizer

We discussed the effect of paddy soil micro-ecological environment and nitrogen transformation dynamics through improved the method of fertilizer application and applied microbial fertilizer. The results showed that： after the application of microbial fertilizer, it can significantly improve the rice rhizosphere micro-ecological environment and the uptake of nitrogen fertilizer of rice. At the same time, it can also increase the residual of soil nitrogen and reduce nitrogen volatilization loss and denitrification. Meanwhile, the deep application of fertilizer can also markedly reduce the loss of nitrogen and increase the number of the rhizosphere microorganisms, thereby improving the crop yields.