3.The result indicated that, 2,4-D butylate and carbamide, MCPA and carbamide were mixed using in wheat field between return green period and draw blur period.
4.DNA bands showed that the modified CTAB and carbamide methods are better than the other four methods including CTAB, carbamide, high salt and low pH, SDS and Chen methods.
9.Then,fertilizers showed strong effects when they restrained under high concentration,after dealed with fertilizers for(96?h),the EC_(50) of Anabaena variabilio Kutzing Anabaena azotica Ley and Anabaena sphaerica Born were 54.0,67.0,85.7?(mg /L) in carbamide and 73.7,63.1,92.2?(mg/L) in ammonium bicarbonate respectively.
10.Nano-sized zirconia powders were prepared from ZrOCl2o8H2O and carbamide by uniform precipitation frothing process. DTA-TG, XRD, ASAP and TEM were used in monitoring the synthetic products. DTA-TG showed that there were two obvious steps of loss of weight, which located among 157℃～276℃ and 276℃～550℃ respectively.
