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通过对四川省 6类 32 9个土壤样品的有效硫的分析 ,结果表明缺硫及潜在性缺硫土样占总样本的 2 3 1 % .但结合田间试验 ,在四川盆地特定环境条件下 ,即使土壤耕层有效硫处于缺乏范围 ,增施硫肥对玉米、小麦、油菜产量无明显增加 ,并就产生的原因作了初步分析 .通过对土壤硫素平衡的测算 ,预测在近期内 ,四川盆地主要农耕地不会发生大面积缺硫问题
Through the analysis of available sulfur in 629 soil samples of 6 types in Sichuan Province, the results show that sulfur deficiency and latent sulfur-deficient soil samples account for 21.3% of the total samples, but with the field experiments, under the specific environmental conditions in Sichuan Basin, Even though available sulfur in soil plowing is in a low range, there is no obvious increase in the yield of corn, wheat and rapeseed by applying sulfur fertilizer, and the causes were analyzed preliminarily.According to the calculation of soil sulfur balance, it is predicted that in the near future, The main farmland in the basin will not have a large area of sulfur deficiency problems