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应用生态学报 ›› 2003, Vol. ›› Issue (8): 1261-1264.

• 研究论文 • 上一篇    下一篇

施用硫肥对几种作物与牧草产量和硫素含量的影响

崔岩山, 王庆仁   

  1. 中国科学院生态环境研究中心, 北京 100085
  • 收稿日期:2001-05-09 修回日期:2001-08-28
  • 通讯作者: 王庆仁
  • 基金资助:
    国家自然科学基金资助项目(39870134)

Effect of sulfur fertilization on yield production and sulfur content of crops and pasture in north China

CUI Yanshan, WANG Qingren   

  1. Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
  • Received:2001-05-09 Revised:2001-08-28

摘要: 为了研究不同作物的需S状况,对我国北方3种主要农作物(小麦、玉米、油菜)和牧草(苜蓿)进行了5个施硫水平(0、5、10、20和40mg·kg-1)的盆栽试验.结果表明,增施一定量的硫肥可以提高作物生物量和产量,4种作物生物量增加5%~32%,小麦和油菜籽粒产量增加3%~20%.同时,增施硫肥可以使作物体内S素增加,但不同作物含硫量明显不同,油菜含硫量最高(0.479%~1.228%),玉米含硫量最低(0.043%~0.091%).同一作物不同部位含硫量不同,但同一作物不同部位含硫量呈显著的线性正相关.如油菜Ⅰ、油菜Ⅱ和小麦植株与其种子含硫量的相关性都达极显著水平,R2值分别为0.399、0.654和0.547(n=15).作物生物量、产量与施硫量相关性除苜蓿外,都达显著或极显著水平;作物生物量、产量与作物体内硫素含量除苜蓿外也显著或极显著相关;作物从土壤中吸收的S开始时随土壤的有效硫增加而增加,但达到一定程度时,随着有效硫的增加吸收的S略有下降.

关键词: 硫肥, 北方作物, 增产效应

Abstract: 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 Sapplication on yield production, Scontents and their relationship of these crops. The results showed that under Sapplication, the biomass of four plants increased by 5~32%, and the grain yield increased by 3~20%. The contents of Svaried with different corps, for example, the content of Sin 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 Sin different plant parts of the same crop had a positive correlation with content of Sapplication. Both the biomass and grain yield for all the crops except the clover had a close correlation with the content of Sapplication. With available Sin the soils increased, the amount of Sabsorbed by crops was increased at the beginning, and then decreased after reached the peak.

Key words: Sulfur fertilization, Crops, Increase production

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