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116个土壤样品分析结果表明 ,闽东南地区耕地土壤有效硫平均含量为 2 1.7mg· kg- 1。其中 ,小于 16mg· kg- 1 的临界指标的样品占总样品数的 5 7.8%。田间试验结果 ,水稻、甘薯和花生在每公顷施硫 2 0～ 6 0 kg范围内 ,都有不同程度的增产效果 ,增幅分别为 2 .9%～ 15 .5 %、 5 .6 %～ 2 2 .4 %和 2 .6 %～ 34.5 % ,且具有一定后效。同时 ,施用硫肥还改善了农产品品质 ,花生粗脂肪、粗蛋白 ,甘薯粗蛋白等的含量都有一定提高
The results of 116 soil samples showed that the average content of soil available sulfur in the southeast Fujian was 27.7 mg · kg-1. Among them, the critical index of less than 16mg · kg-1 samples accounted for 5 7.8% of the total number of samples. Field experiments showed that rice, sweet potato and peanut yield increased in varying degrees in the range of 20-60 kg sulfur per hectare, with the increase rates of 2.9% -15.5% and 5.6% -2 respectively 2 .4% and 2.6% ~ 34.5%, and has a certain effect. At the same time, the application of sulfur fertilizer also improved the quality of agricultural products, peanut crude fat, crude protein, crude protein content of sweet potato have a certain increase