The invention belongs to the technical field of herbicide
crystallization processes, and particularly relates to
triazole sulcotrione polymorph B, a preparation method thereof and an application. An X-
ray powder diffraction pattern of the
triazole sulcotrione polymorph B has characteristic peaks when
diffraction angles 2-theta are 7.1 degrees, 7.3 degrees, 9.6 degrees, 11.8 degrees, 13.4 degrees, 14.2 degrees, 14.6 degrees, 14.9 degrees, 18.2 degrees, 18.8 degrees, 19.1 degrees, 19.6 degrees, 19.9 degrees, 21.0 degrees, 21.4 degrees, 21.7 degrees, 22.6 degrees, 24.1 degrees, 24.4 degrees, 25.1 degrees, 25.8 degrees, 26.4 degrees, 27.2 degrees, 27.7 degrees, 28.0 degrees, 28.6 degrees, 29.4 degrees, 32.1 degrees, 34.7 degrees, 35.9 degrees, 36.8 degrees, 38.8 degrees, 39.3 degrees and 39.7 degrees. The
triazole sulcotrione polymorph B is good in stability, the polymorph B or a compound composition of the polymorph B and other effective components has
good control effect on gramineous weeds of rice fields and parts of broadleaf weeds, and the
control effect of the polymorph B is obviously superior to that of polymorph A.