曹殿云, 王宏伟, 徐晓旭. 硫肥用量对玉米氮硫吸收分配和产量的影响[J]. 中国生态农业学报(中英文), 2017, 25(9): 1298-1305. DOI: 10.13930/j.cnki.cjea.170457
引用本文: 曹殿云, 王宏伟, 徐晓旭. 硫肥用量对玉米氮硫吸收分配和产量的影响[J]. 中国生态农业学报(中英文), 2017, 25(9): 1298-1305. DOI: 10.13930/j.cnki.cjea.170457
CAO Dianyun, WANG Hongwei, XU Xiaoxu. Effect of sulfur on nitrogen/sulfur uptake/distribution and yield of maize[J]. Chinese Journal of Eco-Agriculture, 2017, 25(9): 1298-1305. DOI: 10.13930/j.cnki.cjea.170457
Citation: CAO Dianyun, WANG Hongwei, XU Xiaoxu. Effect of sulfur on nitrogen/sulfur uptake/distribution and yield of maize[J]. Chinese Journal of Eco-Agriculture, 2017, 25(9): 1298-1305. DOI: 10.13930/j.cnki.cjea.170457

硫肥用量对玉米氮硫吸收分配和产量的影响

Effect of sulfur on nitrogen/sulfur uptake/distribution and yield of maize

  • 摘要: 为明确硫肥用量在作物增产方面的效应,本研究采用单因素随机区组设计,通过大田试验,设置5个硫肥(硫磺)用量,分别为0 kg(S)·hm-2(S0)、40 kg(S)·hm-2(S1)、80 kg(S)·hm-2(S2)、120 kg(S)·hm-2(S3)和160 kg(S)·hm-2(S4),研究不同硫肥用量对玉米产量和氮硫素吸收、分配的影响。结果表明,施用硫肥可使玉米产量增加7.0%~18.1%,S2处理玉米产量最高,为12 978.30 kg·hm-2。施用硫肥能显著提高玉米各生育时期(除大喇叭口期外)植株干物质积累量。成熟期,玉米叶片、叶鞘、籽粒干物质积累量均在S2处理下达最大值,玉米茎秆、苞叶、穗轴干物质积累量均在S1处理下达最大值。整个生育期内,玉米硫素积累量和硫素吸收强度均在S2处理下达最大值,且显著高于不施硫的S0处理。成熟期时,玉米叶片硫素积累量随施硫量的增加而增加,S4处理时达最大值;玉米茎秆、苞叶、穗轴硫素积累量均在S1处理下最大;玉米叶鞘和籽粒硫素积累量则S2处理下最大。从拔节期至抽雄吐丝期,S3处理促进玉米氮素积累效果最佳;灌浆期和成熟期分别以S1和S2处理更有助于玉米氮素积累。施硫量的增加会在一定程度上降低玉米硫肥偏生产力和硫肥利用率;玉米硫肥农学利用率在S2处理下最大。玉米植株的氮素和硫素吸收累积量具有极显著相关关系。因此,适量的硫肥在提高玉米产量和氮硫吸收、分配及利用效率方面发挥着重要作用,施硫量为80 kg(S)·hm-2时,整体效果最佳。

     

    Abstract: For an in-depth understanding of the effects of sulfur on crop yield improvement, a field experiment was conducted to determine the effects of sulfur application on the absorption and distribution of both nitrogen and sulfur in the'Zhengdang-958'maize cultivar. To that end, a single factor randomized block design was set up in the experiment with five levels of sulfur-0 kg·hm-2, 40 kg·hm-2, 80 kg·hm-2, 120 kg·hm-2 and 160 kg·hm-2. The results showed that the application of sulfur increased the yield of maize within the range of 7.0%-18.1%. When the application of sulfur was 80 kg·hm-2, the yield of maize reached the highest level (12 978.30 kg·hm-2). Also dry matter accumulation in maize increased significantly through the application of sulfur, with the peak value under 80 kg·hm-2 at all growth stage except for the big trumpet stage. Dry matter accumulation in leaf, leaf sheath and grain weight were also the highest in 80 kg·hm-2 sulfur treatment among different sulfur application levels at the mature stage. However, the dry matter accumulation in maize stem, bract and cob were the maximum under sulfur application level of 40 kg·hm-2. Sulfur absorption and accumulation in maize was the maximum at each growth period under sulfur dose of 80 kg·hm-2, which was significantly higher than that under sulfur dose of 0 kg·hm-2. Sulfur content in maize leaf increased with increasing sulfur application level. The sulfur accumulation in corn stalk, bract and cob were highest under sulfur application level of 40 kg·hm-2 whereas those in maize leaf sheath and grain were highest under sulfur application level of 80 kg·hm-2. Nitrogen accumulation in maize was highest from jointing to the silking stage when sulfur dose was 120 kg·hm-2. But at maize grain-filling and maturity stages, the nitrogen accumulation reached the peak points under 40 kg·hm-2 and 80 kg·hm-2 levels application, respectively. Sulfur partial productivity and use productivity decreased with increasing sulfur application level. When sulfur dose was 40 kg·hm-2, sulfur partial productivity and use productivity reached the highest values. The agronomic efficiency of sulfur was largest under sulfur dose of 80 kg·hm-2. Sulfur accumulation was positively correlated with nitrogen accumulation. In conclusion, fertilization using sulfur (at 40-120 kg·hm-2) had high yield and fertilizer use efficiency. All in all, sulfur application was critical for nitrogen and sulfur uptake, distribution and use efficiency of maize. The overall effect was best under sulfur application level of 80 kg·hm-2.

     

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