Effect of sterilization with CH_3Br on root growth of soybean seedlings
溴甲烷土壤灭菌对大豆苗期根系生长的影响

A field experiment was conducted to verify the effect of soil sterilization with CH 3Br on root and seedling growth of soybean( Glycine max (L.)) in both normal cropping and soybean continuous cropping for three years.The growth of continuous cropped soybean plants was significantly improved after sterilization,as indicated by the increase in root growth,nodule number,plant fresh weight,primary and total root length,and disappearance of cyst of soybean cyst nematode.The growth of normally cropped soybean crops was slightly inhibited after sterilization.Steriliation with CH 3Br would be an efficient measure for cultivation in continuous soybean cropped system.