新型肥料Entec26在土壤中的转化及其对玉米的增产效果

Transformation of the New Fertilizer Entec26 in Soil and It's Effect on Maize Yield

本试验研究了新型肥料Entec26(ASN+DMPP)在土壤中的转化过程及对玉米的增产效果。结果表明在海南省气候与土壤条件下,新型硝化抑制剂DMPP能有效抑制土壤中的硝化过程。施用氮肥Entec26、并在玉米生长后期做追肥具有良好的增产效果。DMPP对提高玉米氮肥利用率有显著效果。在氮肥追肥、低施氮量的情况下,与未添加DMPP的处理相比,施用DMPP的处理氮肥利用率提高了13.4％。氮肥做追肥的处理和氮肥全部基肥的处理相比,对玉米有显著的增产效果,增产幅度最高达35.64％。增加施氮量提高玉米籽粒产量效果不显著。ASN与尿素相比提高玉米籽粒产量的效果更明显。

Transformation of the new fertilizer Entec26 in soil and it's effect on maize yield were studied by field experiment. The results showed that the nitrification inhibitor DMPP inhibites the nitrification in soil under the climate conditions of Hainan province. Entec26 can improve maize yields if splitting application as basal and top-dressing. DMPP can improve the yield of maize,especially on the nitrogen recovery rate. Compared with the treatment without DMPP, nitrogen recovery rate was improved by 13. 4% in the treatment adding DMPP on conditions top-dressing with top-dressing and lower application rate. Compared with the treatment that nitrogen fertilizer was all applied as basal fertilizer, the treatment with splitting application had significant effect on improving maize yield(35. 64%). The high nitrogen fertilizer rate showed no significant effects on maize yield. The difference in applying effect on maize grain yield of ASN and Urea was significant.