黑龙江省主要类型水稻土壤硫素状况及硫肥有效性研究

Study on Sulphur Status in Heilongjiang Paddy Soil and Effect of Sulphur

硫是作物营养过程中不可缺少的中量元素。近年来 ,由于无机元素的大量投入 ,黑龙江省的部分耕地土壤出现了缺硫现象 ,影响了作物的产量与品质。研究结果表明 :黑龙江省不同类型水稻土壤全硫含量为 10 2～ 816mg/kg ,其中黑土 >草甸土 >草甸黑土 >白浆土。有效硫的含量为 7.1～5 6 .7mg/kg ,低于全国平均临界含量 2 0mg/kg的地块出现频率占总样本的 11 8% ,低于缺硫临界含量 15mg/kg的地块出现频率为 9.8%。

Sulphur is the important medium element and the fourth nutrient element for plant. In Heilongjiang province, total sulphur is 102～816mg/kg in different types of paddy soil, and average value is 476.8mg/kg. black soil >meadow soil>meadow black soil>albic soil . Active sulphur is 7.1～56,7mg/kg in different types of paddy soil .The samples with an active sulphur value below the average value of china,20mg/kg, account for 11.8% of total samples and 9.8% below 15mg/kg,the sulphur fertilizers show notable effect of increasing the yield and improving the quality of rice.