广西主要经济作物土壤硫素状况和硫肥效应研究

对广西主要作物种植区土壤进行调查研究，结果表明：甘蔗、木薯、大豆和花生的缺硫土壤分别占41．3％、38．5％、37．1％和31．6％。施用硫肥后，甘蔗、木薯、大豆和花生分别平均增产7．4％。11．1％、5．2％～7．9％、6．6％～8．7％和7．1％～9．5％。施用元素硫肥与施用硫酸根态硫肥的增产效果基本相当。甘蔗、木薯、大豆和花生对硫的吸收量约为50～60kg／hm^2．30-35kg／hm^2,22-28kg／hm^2和23-30kg／hm^2。

Soil S status and effects of S-fertilizer on cash crops in Guangxi

The soil survey indicated that the S deficiency in the soil of sugarcane,cassava,soybean and peanut accounted for 41.3%,38.5%,37.1% and 31.6% respectively in Guangxi.The application of S-fertilizer to sugarcane,cassava,soybean and peanut could increase yield by 7.4%-11.1%,5.2%-7.9%,6.6%-8.7%,7.1%-9.5%,respectively.The effects of the application of element S were similar to that of sulphate S.The amounts of S uptake by sugarcane,cassava,soybean and peanut were 50-60 kg/hm2,30-35 kg/hm2,22-28 kg/hm2,and 23-30...