锰施用量对香稻生理特性和糙米锰含量的影响
【目的】探究硫酸锰(MnSO_4)不同施用量对香稻生理特性和糙米中锰(Mn)元素含量的影响,为香稻的优质栽培提供理论依据。【方法】以常规香稻美香占和农香18为材料,通过盆栽试验,采用随机区组排列,设置4个基施MnSO_4处理,即分别施入MnSO_46.67(Mn1)、10.00(Mn2)、13.33(Mn3)、16.67(Mn4)mg·kg~(-1),以不施入MnSO_4作为对照(CK)。【结果】与CK相比,Mn4处理更有利于提高香稻糙米中Mn含量,美香占早、晚造增幅分别为22.02%和6.75%;农香18早、晚造增幅分别为1.48%和4.26%。基施MnSO_4能较好地增加早、晚造香稻孕穗期...
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Published in | 华南农业大学学报 Vol. 37; no. 3; pp. 46 - 53 |
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Main Author | |
Format | Journal Article |
Language | Chinese |
Published |
农业部华南地区作物栽培科学观测实验站,广东广州510642%华南农业大学农学院,广东广州,510642
2016
华南农业大学农学院,广东广州510642 |
Subjects | |
Online Access | Get full text |
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Summary: | 【目的】探究硫酸锰(MnSO_4)不同施用量对香稻生理特性和糙米中锰(Mn)元素含量的影响,为香稻的优质栽培提供理论依据。【方法】以常规香稻美香占和农香18为材料,通过盆栽试验,采用随机区组排列,设置4个基施MnSO_4处理,即分别施入MnSO_46.67(Mn1)、10.00(Mn2)、13.33(Mn3)、16.67(Mn4)mg·kg~(-1),以不施入MnSO_4作为对照(CK)。【结果】与CK相比,Mn4处理更有利于提高香稻糙米中Mn含量,美香占早、晚造增幅分别为22.02%和6.75%;农香18早、晚造增幅分别为1.48%和4.26%。基施MnSO_4能较好地增加早、晚造香稻孕穗期及后期的茎秆和叶片中全Mn含量,2个品种均以Mn4处理的结果较好。基施MnSO_4,以Mn4处理最有利于早、晚造香稻不同生育期叶片净光合速率(Pn)的提高和植株干物质积累量的增加;Mn4处理更有利于增强早、晚造各生育期叶片超氧化物歧化酶(SOD)和过氧化物酶(POD)活性,降低叶片丙二醛(MDA)含量。【结论】适量基施MnSO_4有利于提高香稻的Pn,增强香稻对外界环境的抗逆性和适应性,促进香稻的生长,提高香稻茎叶中全Mn含量,最终促进糙米中锰元素的积累;本研究最佳施用量为基施MnSO_416.67 mg·kg~(-1)。 |
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Bibliography: | 44-1110/S LI Meijuan1'2 TIAN Hua1'2 MO Zhaowen1,2 KONG Leilei1'2 WANG Chaochao1 ,2 LIU Haidong1'2, LI Furong1 , LI Zhizhen1, TANG Xiangru1'2 ( 1 College of Agriculture, South China Agricultural University, Guangzhou 510642, China; 2 Scientific Observing and Experimental Station of Crop Cultivation in South China, Ministry of Agricuhure, Guangzhou 510642, China) [ Objective ] To investigate the effects of MnSQ basal applications on physiological characters and Mn content of aromatic rice, and to provide a theoretical basis for cultivating high-quality aromatic rice. [ Method ] Pot experiment was carried out using Meixiangzhan and Nongxiang 18 as planting materi- als. Four basal applications of MnSQ were employed with the concentrations of 6.67 ( Mnl ), 10.00 (Mn2), 13.33 (Mn3) and 16. 67 (Mn4) mg· kg-1 respectively. There was a control treatment (CK) with none MnSO4 application. The experiment was arranged in a randomized block design. The Mn con- tents of leaves, stems and brown rice grains were measured. The e |
ISSN: | 1001-411X |
DOI: | 10.7671/j.issn.1001-411X.2016.03.007 |