河南省耕地土壤硫素现状、硫肥增产效应及土壤硫素平衡概况  

Current situation of sulfur in soil, yield-increasing of crop response to S fertilizer and sulfur balance in soil of Henan province

作　　者：孙克刚[1] 王继印[1] 杨稚娟[1] 张泽彦[1] 毕建国[1] 张春生[2] 

机构地区：[1]河南省农科院土肥所,河南郑州450002 [2]驻马店市农业科学研究所,河南驻马店463000

出　　处：《磷肥与复肥》2004年第4期70-72,共3页Phosphate & Compound Fertilizer

摘　　要：对河南省几种主要土壤全硫和有效硫含量进行了测定 ,结果表明全省耕地有 1/ 2面积属缺硫或潜在性缺硫。主要作物硫肥田间小区试验结果表明增产效果显著 :施硫使小麦增产 3.5 %～ 13.4 % ,玉米增产 3.5 %～11.7% ,大豆增产 7.1%～ 13.5 %。在施硫量相同情况下 ,小麦、玉米施硫磺增产效果大于施石膏 ,而大豆施石膏增产效果则大于施硫磺。如果维持当前土壤硫素水平 ,每年需补充硫 4 8～ 85 kg/ hm2。The determinations of total sulfur and available sulfur in a few important soil types in Henan Province show that half of the area is deficient or potentially deficient to sulfur supply. Sulfur application plot experiment on main crops increase the yield: wheat by 3.5%～13.4%,maize 3.5～11.7%,soybean 7.1 ～13.5%. On the equivalent sulfur supply, gypsum is better than element sulfur on wheat and maize while it is reverse on soybean. More, 48～85 kg/hm 2sulfur must be provided on the supplement of current sulfur conservation.

关 键 词：L壤有效硫 硫磺 石膏 

分 类 号：S158[农业科学—土壤学]