Seven kinds of soil fumigant, 35% XianKe, 98% Basamid, 32.7% Metham_sodium, 32.7% Simeidi, 33.6% Shimeidi, 98% Dazomet and 98% methyl bromide, were tested to control weeds in tobacco seedbed.

Theoretically, one would expect the distribution of a fumigant to be more rapid at lower soil water contents.