[Effect of sulfur fertilization on yield production and sulfur content of crops and pasture in north China].
Pot experiment on 3 crops (wheat, corn, oilseed rape) and a pasture (clover) under 5 levels (0, 5, 10, 20, 40 mg.kg-1) of sulfur (S) was carried out to study S application on yield production, S contents and their relationship of these crops. The results showed that under S application, the biomass of four plants increased by 5-32%, and the grain yield increased by 3-20%. The contents of S varied with different corps, for example, the content of S in the oilseed rape was the highest (0.479-1.228%), and that in corn was the lowest (only 0.043-0.091%). The contents of S in different plant parts of the same crop had a positive correlation with content of S application. Both the biomass and grain yield for all the crops except the clover had a close correlation with the content of S application. With available S in the soils increased, the amount of S absorbed by crops was increased at the beginning, and then decreased after reached the peak.
Cui
Yanshan
Y
Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China. cys72@263.net
Wang
Qingren
Q
D018556:Crops, Agricultural / Q000254:growth & development* / Q000378:metabolism; D005308:Fertilizers; D012987:Soil / Q000032:analysis; D013455:Sulfur / Q000032:analysis*
D005308:Fertilizers; D012987:Soil; D013455:Sulfur