研究了小麦-油菜轮作生产体系中选择连续种植三年油菜、两年小麦以及小麦-油菜-小麦轮作等三种不同种植方式对土壤有效硫含量的影响,结果表明,三种不同种植方式下土壤有效硫含量全部低于临界水平(20 mg/kg);6年内土壤有效硫含量降低一半。施硫可增加小麦的穗长、穗粒数,增加油菜单株结荚数、角果长和角粒数,从而增加了小麦和油菜的产量,施硫45 kg/hm2使小麦、油菜产量的增幅分别为6.5%~17.3%和25.4%~51.3%。 The effects of three different planting modes of continuous planting three-year rapeseed, two-year wheat and wheat-rapeseed-wheat rotation on soil available sulfur content in wheat-rapeseed rotation production system were studied. The results showed that under three different planting methods, soil Available sulfur content was all below the critical level (20 mg / kg); soil available sulfur content was reduced by half in six years. Sulfur application could increase the spike length and number of grains per spike, increase the number of pods per plant, the length of pod and the number of cotyledons in rapeseed, thus increasing the yield of wheat and rape. The yield of wheat and rapeseed at 45 kg / hm 2 The increases were 6.5% ~ 17.3% and 25.4% ~ 51.3% respectively.