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氮硫互作对玉米苗期生长及养分吸收与利用的影响
Effects of Nitrogen and Sulfur Interaction on Growth and Nutrient Absorption and Utilization at Maize Seedlings
投稿时间:2019-01-26  修订日期:2019-07-06
中文关键词:玉米  氮硫互作  植株形态  养分吸收  养分利用效率
英文关键词:maize  nitrogen-sulfur interaction  plant morphology  nutrient uptake  nutrient use efficiency
基金项目:吉林省自然科学基金面上项目(20190201117JC)、国家重点研发计划项目(2016YFD0200101)
作者单位E-mail
刘烁然 吉林农业大学资源与环境学院/吉林省商品粮基地土壤资源可持续利用重点实验室 shuoranliu@163.com 
应飞宇 吉林农业大学资源与环境学院/吉林省商品粮基地土壤资源可持续利用重点实验室  
崔帅 吉林农业大学资源与环境学院/吉林省商品粮基地土壤资源可持续利用重点实验室  
钟晟昊 吉林农业大学资源与环境学院/吉林省商品粮基地土壤资源可持续利用重点实验室  
李振超 吉林农业大学资源与环境学院/吉林省商品粮基地土壤资源可持续利用重点实验室  
张星宇 吉林农业大学资源与环境学院/吉林省商品粮基地土壤资源可持续利用重点实验室  
陈利东 吉林农业大学资源与环境学院/吉林省商品粮基地土壤资源可持续利用重点实验室  
王寅 吉林农业大学资源与环境学院/吉林省商品粮基地土壤资源可持续利用重点实验室 wy1986410@163.com 
高 强 吉林农业大学资源与环境学院/吉林省商品粮基地土壤资源可持续利用重点实验室  
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中文摘要:
      设置盆栽试验,研究氮、硫养分互作对玉米苗期植株生长和养分吸收的影响。结果表明:氮素和硫素对玉米苗期的生长和养分吸收均有显著影响,且交互作用显著。缺氮严重阻碍玉米苗期生长,不施氮(N0)处理的株高、茎粗、SPAD值、净光合速率、干物质积累量和氮素积累量与高氮(N2)处理相比差异显著,分别下降32.7%、29.9%、22.1%、15.6%、32.2%和74.0%,低氮(N1)处理介于N0处理和N2处理之间。施硫显著促进玉米苗期生长,但不同施氮条件下施硫的效果差异明显。N0条件下施硫改善玉米生长,显著提高苗期干物质积累;N1条件下施硫促进玉米生长和氮素吸收,S2处理的氮素利用率较S0处理提高52.9%;N2条件下施硫效果与N1条件下接近,但增施硫肥未显著提高氮素利用率。总体来看,N2S1处理发挥了良好的氮硫互作效应,获得较高的玉米植株干重(82.03 g/株)、最高的硫素利用率(9.24%)和较高的氮素利用率(31.84%),是适宜玉米苗期生长的最佳氮硫养分管理措施。
英文摘要:
      The effects of nitrogen and sulfur interaction on plant growth and nutrient uptake in maize seedlings were studied by pot experiment. The results showed that nitrogen application and sulfur application had an effect on the growth and nutrient uptake of maize seedlings, and interaction between the two was significant. It is obvious that nitrogen deficiency severely impeded the growth of maize. The plant height, stem diameter, SPAD value, net photosynthetic rate, dry matter accumulation and nitrogen accumulation of N0 treatment were lower significantly than those of N2 treatment with difference value of 32.7%, 29.9%, 22.1%, 15.6%, 32.2% and 74.0% respectively. Furthermore, the above parameter indexes of N1 treatment were higher than N0 treatment as well as lower than N2 treatment. Sulfur application significantly promoted the growth of maize while the effects of sulfur application were different under various nitrogen application conditions. Without nitrogen fertilization (N0), sulfur application improved maize growth, and significantly raised the dry matter accumulation of maize seedlings. Under low nitrogen condition (N1), maize growth and nitrogen uptake were promoted with sulfur application; meanwhile nitrogen utilization of N1S2 treatment was 52.9% better than that of N1S0 treatment. Under high nitrogen condition (N2), the sulfur fertilization effect was similar to that of low nitrogen application, but the improvement of fertilizer utilization rate of nitrogen is not significant with further addition of sulfur fertilizer. In conclusion, superior dry matter accumulation (82.03 g/plant), the highest sulfur utilization (9.24%) and superior nitrogen utilization (31.84%) were observed in N2S1 treatment which had the most significant nitrogen and sulfur interaction. Therefore, N2S1 fertilization is the most effective nitrogen and sulfur nutrition management measure for maize seedlings growth.
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