【作者】 杜安刚；

【导师】 毛达如；

【作者基本信息】 中国农业大学 ， 植物营养学， 2003， 硕士

【摘要】 通过大田试验研究了新型硝化抑制剂DMPP和BASF复合肥对不同作物的产量的影响，主要研究结果如下： 在海南省当地气候、土壤条件下，DMPP能有效抑制氮肥在土壤中的硝化作用过程，使土壤中的NH₄⁺-N较长时间保持较高含量，并减少NO₃^--N在土壤中的过量累积。 氮肥中添加DMPP能够提高玉米、水稻的籽粒产量、吸氮量、氮肥利用率。其中在玉米上的试验结果表明，在150kg·hm^-2施氮水平下，玉米籽粒产量、吸氮量、氮肥利用率分别提高1.9-18.8％、2.2-28.4％、2.7-17.5％。在225kg·hm^-2施氮水平下，玉米籽粒产量、吸氮量、氮肥利用率分别提高2.4-2.5％、5.8％、1.3％。在水稻上的试验结果表明，在150kg·hm^-2施氮水平下，水稻籽粒产量、吸氮量、氮肥利用率分别提高0.5-25.8％、6.8-14.5％、3.9-9.1％。在南方高温、多雨地区，DMPP和氮肥配合施用的效果明显好于在北方地区的应用效果。随着施氮量的增加，DMPP和氮肥配合施用的效果表现出下降的趋势。和氮肥全部基施的处理相比，氮肥分次施用的施用方式能显著提高玉米、水稻的籽粒产量、吸氮量、氮肥利用率，特别是在施氮量较低的条件下，提高的效果更明显。 ASN和尿素在玉米、水稻上施用时，两者之间施用效果没有显著差异。但ASN在西瓜、辣椒上施用的效果优于尿素，施用ASN的西瓜、辣椒产量、挂果数、单果重等指标都高于施用尿素的处理。更多还原

【Abstract】 The field experiments were conducted to study the effect of the new type of nitrification inhibitor DMPP and BASF compound fertilizer on yield of different crops. The results were as follows:DMPP could inhibit the transformation of fertilizer N in soil effectively and kept high NH4+-N concentration in soil while reduced exsssive NO3-N accumulation in soil under the climate condition in Hainan.The grain yield,N uptake,N use efficiency of maize and rice was increased by applying DMPP with N fertilizer.The results of maize experiments showed that the grain yield,N uptake N use efficiency were increased 1.9-18.8%,2.2-28.4%,2.7-17.5% at N application rate of 150 kg-ha-1 respetively.but increased 2.4-2.5%,5.8%,1.3 % at N application rate of 225 kg-ha-1.The results of rice experiments showed that the grain yield,N uptake N use efficiency of rice was increased 0.5-25.8%,6.8-14.5%,3.9-9.1 5% at N application rate of 150 kg-ha-1.The effect of DMPP on maize in south area of China with high temperature and high rainfall was better than that in north area of China.The effect of DMPP with N fertilizer on maize and rice declined with N application rate.Compared with the treatment that all nitrogen fertilizer was applied as basal,the treatments with splitting application had better effect on grain yield,N uptake,N use efficiency of maize and rice, especially at lower N application rate.There was no significant difference between ASN and Urea on maize and rice.However,the effect of ASN on yield of capsicum and watermelon was better than that of UreaThe yield , fruit number and fruit weight of the treatments applied with ASN were higher than that of the treatments applied with Urea.更多还原